First, thank you for your kind words and liking the supplement!
To answer your questions:
First, what about the corruption system? some spells indicate corruption points, but there is no explanation for this. I assume you took this from some other hack, please tell me!
It is in there.. but could be better explained.
First, this only affects "Artifact spells", that create lasting major changes to the lands. These spells are "Create Artifact", "Wonder", "Bend Reality" and "Raise Land".
These all require special ingredients, as noted on page 67. Some ingredients are hard to come by, but doing things that adds some corruption is a lot easier.
Like, if you sacrifice someone in a ritual. It fulfills the "corrupting action" criteria, so it while that adds an ingredient point for a power level, it also adds a corruption point.
For simplicity, lets say you forge your own sword and want to enchant it with a d8 artifact die. You sacrifice someone during the ritual to gain a needed ingredient for the rank 1 power level required for the spell (page 67). Sacrificing someone is however a corrupting action, and so also adds a point of corruption, so the sword, if both successfully crafted and enchanted, will need to "spend" that corruption point as well. Perhaps it "corrupts life", so that you take an Empathy damage on each kill while using it? Feel free to make up your own corruption.. it perhaps haunts you with nightmares and hinders you from sleeping for a couple of days equal to amount of people you kill?
It is really good that you find these issues and give feedback!
I'm at least thinking on updating this with a new large version (+ errata + some small upgrade pages for those that have already printed it) when the Alsene/Horn expansions arrives.
And this is a prime example of something that should be broken up and better explained.
Secondly, the question about the destructive power (gear bonuses) of crossbows - +3 - is it really powerful and slightly wild - is this a typo, or is it justified?
Well I wanted there to be a reason for using crossbows. Historically they kind of replaced bows, as you needed less strength and skill to use them.. but they were inferior if you were a skilled bowman.
First the price. They cost much more than a bow, takes weeks instead of days to produce and requires you to be BOTH a smith and a bowyer.
Then they also require longer reload AND the simpler one has shorter range, since quarrels aren't as aerodynamically stable in flight..
On top of this they gain less synergy from the Fast shooter talent (as they do not benefit from the "no longer need to READY WEAPON before you SHOOT" bonus).
So crossbows has a lot against them..
But they were easier to aim than a bow, especially as holding a bow fully drawn uses a lot of your strength at the same time, so should be easier to hit with. So no, not a typo.
Instead I allow bows to be constructed as War bows (page 34), to compete a bit in strength if you are a particularly strong individual.
And since bows are so cheap (and takes such a short time to produce), you could also compensate by creating masterwork and composite versions of these.
Thirdly - the talent Fast shooter and crossbows, especially the windlass crossbow - does this mean that, with its 2 rounds reloading, at the 3rd level of the fast shooter it reloads round + slow action and shoots in the second round with fast action?
Yes, you need to spend two slow actions reloading, and then you can shoot using a fast action on your second turn.
I don't see this as a problem.. it still takes longer than if you take a swing action in melee, for not much more effect.
And your opponent can try to dodge or parry with a shield (at +2 for being against a piercing attack) every other round to negate a lot of the danger.
What I do not like it that rank 2 and rank 3 stacks with each other for bows, according to the standard rules of the game.
And running at full speed backwards, while shooting twice as fast without any penalties.. no, I do not really like that. At the same time, someone chasing would need to constantly dodge at -2 just to keep up but not ever be able to come closer, and then only if their dodges are free..
If my players would face that, they would start throwing things at me for being a bad GM.
Should I should probably change that, so that rank 2 simply cannot be used at the same time as any of the other ranks (rank 1 and 2 would then still stack, as they are not really used at the same time).
I don’t understand why it’s not so popular - at the moment this is the coolest addon for fantasy Year Zero that I have seen!
I'm just very happy that some have found use of it!
I should perhaps also add a poll of what people do dislike or so, and make those parts of the rules at least more optional in nature?
There are a bit more cross-referencing between the rules then I might like.. at least there should be added optional rule boxes perhaps? Like if you don't use "optional rule x", then instead do "this"... and so on..?
Also, if Fria Ligan/Freeleaguepublishing ever wants to reuse or take any (or all) parts of Reforged Power to use it in their own works, they have my full permission to do so. But if so, do note that some rules have been heavily inspired by others posts on this forum and reddit (all noted under credits, see page 3), so some more permission hunting might be required in some cases.