I'm happy with increasing the number of skills. Not sure if up to 25 but i wouldn't mind seeing a few more in the very least. Especially to charisma, which i think atm is very lacking.
If i were to make a few suggestions, i would do the following. For charisma, i would suggest "Bluff", "Command" and "Empathy".
Bluff is for deception, withholding information, but also for your ability to keep a poker face. (So even if you are scared senseless, you can use bluff to act as if you are unphased at the danger).
Command would be using charisma, authority, influence or intimidation to make a character do something you want them too. In contrast to Persuasion, which is more making npcs seeing things your way or come to some form of agreement, Command have you enforce your will over them to make them do what you want. Now, similar to the rules on persuasion (page 36) you can't force npcs to do things that would be harmful or detrimental to them. (So can't try to invoke your noble father's name to make the storekeeper give you an item for free, for instance)
So some examples of what command could do could be if you are on a ship and the crew is panicking due to a monster attack, you can roll command to yell them to get back to their stations. You can use command to invoke your reputation (good or bad) to make people recognize who they are dealing with. Or you force them to do something by being intimidating.
A potential drawback can be that abusing command can make the npcs dislike you, and potentially bite you in the ass later.
Likewise, command could be used for skill checks involving controlling animals (So the Hunters "Animal Kinship" feature could use Command instead of Persuade)
Empathy is your ability to read others, such as noticing if they are upset, displaying a character tick, or recognize their general mood (Like understanding if that wolf is happy to see you, or if it is about to get angry and start growling). Should note Empathy is NOT a lie detector. You might recognize that the person you're talking to is acting nervous, but that doesn't mean necessarily that they are lying to you.
Other skill i could consider would to detach a few things from "Lore". Not remove it entirely (it can still be the skill in knowing about myths, legends, monster and magic), but i would have a "Knowledge/Academics" skill. This would basically cover book knowledge (Maths, history, languages, flora and fauna, etc).
Other skills, but not as sure about i could consider would be "World" (Knowledge about nations, recent events, influential people and factions etc), "Crafting" (Your ability to make stuff, be it tools, weapons, potions, or cobble together something out of what you have at hands) and "Performance" (Play music, acting, making tricks and displays).