I'l lhave to disagree with you on this one.
IMO, the two talents 'Hardened' and 'Seen it all' already cover pretty well the need to have a 'sturdier scientist' or a 'contemplative marine'. No wonder why your players love your mechanic, because it bypasses the 'scarcity of resources' in character creation (Attribute points) and allow them to "have the cake and eat it too" figuratively speaking. It eliminates all the hard choices for them. For example, they can safely dump all their points on STR/AGI, and become killing machines, and not worry about their mental stability since they will compensate with Survival, while at the same time increasing their health to stage V+ Xenomorph levels, thanks to Stamina... And throw talents on top of that.
If it works for your group, sure, keep on. That's precisely the point on house rules, adapting the core rules for the needs of each group. For my part, (and specially in a horror rpg like ALIEN) I prefer to keep my players in the mood of scarcity of resources, with clear weaknesses in their characters that convey a sense of vulnerability (either to pain or panic) and the feeling that a single mistake in the inappropiate moment could spell a swift and instant death.
Your ideas are excellent, my friend (Storm). I like the addition of survival for resolve and stamina for health. Survival is a skill we rarely use, and it would give it a bit more weight to use it more.
The formulas would be...
wits + empathy/2 + survival = resolve
strength + agility/2 + stamina = health
If I understand correctly, it's brilliant and intriguing.
P.S. But I possibly agree with Jehan Menasis, we shouldn't have super stats as strong as the xenomorph. But it's still intriguing, I like the additions of stamina + survival.
Arthur.
Thank you both for your feedback and your right, it does give the players much higher stats. If they invest time and mange to live long enough to do so. Remember, skills cost 5xp and getting 5xp RAW is a challenge in itself. For my table this works, more health = more enemies gives them that feeling they are really going up against a horde of creatures that they can just barely survive. I'm always saying in Alien games, "Death is an escape, trauma you can't escape from. What do you want?" My players always say Trauma Llama! So I tweaked thinks so they could live longer and get to experience and role play out the traumas.
Specifically @Jehan Menasis
I understand where your thoughts go on players dumping there stats into STR/AGI but my players (thankfully) are here for the RP and story. They make characters that are believable. One of them actually didn't spend any XP after awhile and I asked why. She said "I've reached the limit of what I think this character should be at in skills and talents." She pointedly did not go for that 5th skill point because she felt as though her character shouldn't be there regardless of things. So would my forumal work for every table? NOPE! But that's ok! This is my way balancing things for my group. Also if you still want the balance but make it less "Super" tack that /2 on there as well. It still gives some growth chance for players but again its not for everyone.
Specifically @_ArthurDallas_
Yes! The formulas would be... as per the current EE rules.
wits + empathy/2 + survival = resolve
strength + agility/2 + stamina = health
Alternatively you could run it like below for less "Super" boost to stats.
wits + empathy + survival /2 = resolve
strength + agility + stamina /2= health
Here is a quick break down of things so people don't need to do the math. Say you have a player who decided to go hard core into a specific stats, EE Rules (Don't forget they round up) Could always round down instead!
> Health: 5str + 4agi /2 = 5 (Now add Stamina of 5 = 10 health. Ok but feels OP after adding Harden (which Tomas says is gonna be a multi buy talent for a total of +3) Which gives us 13 health...
So lets try the alt formula
> 5str + 4agi + 5stam /2 = 7 (Now add Harden +3 gets us back up to 10. Still kinda OP However, the player has also just spent 90xp in regards to EE rules for skill cost)
Could change it up further by /3 instead of 2 even...
> 5str + 4agi /3 = 3 (now add 5stam = 8. Add Harden +3 = 11) That's actually worse... Never mind! lol.
See what I mean its not as OP as you might think at first glance. I've been playing this way for a while and my players and I do like it, it fits our style of game. I feel like there are going to be more Physical based characters who should have more Resolve because they do see that action and live through Survival Training. They deserve a chance to be the "level headed" leader too. As do the Mental based characters should be help to take a hit and not keel over from it if they Trained their bodies and went to the gym or ran everyday.
It gives a use to two hardly ever used stats and gives them a slight or large boost depending on your choice of options. Also you can always round down too! I not asking to make this a thing for the game in the new rules even I can see that this greatly goes in the opposite direction of what they have in mind for the game but this is for my table and I feel like some other tables might like it so I share and spread the word and say "Less squish/stress wanted? Try this! Its a little OP but you have options!"
At the end of the day as much as I love Alien. Its not built for long games and that's ok. I like writing stories and building things. This game gave me the building blocks and foundation to make an insane, intriguing, interlinking and totally epic story for my players. That's all I could ever want.
Edit:
I also want to point out that the investment for "Max Health/Resolve" is going to weaken the character in other skills if they just focus on that alone. They can't actually become "Killing Machines" if they aren't given the option to get the 90xp plus another 75xp for the Ranged Combat. So it might raise your health/resolve op to high numbers that might appear OP at first glance but if you look at the wider perspective of things you will see that it takes ALOT of time to get to those numbers. Most campaigns don't last that long. If they do then I think those characters deserve to have those numbers because they survived that long. At most people might invest 1 to 3 points into survival/stamina in a campaign and spread out points elsewhere. Min/Maxers are gonna find out real quick its not gonna be that easy.