I don't know how the game is coded, but I always had the feeling that talents would not be able to "interact" with other stuff (like equipment or trinkets) except in a very general and "passive" way. So your second suggestion would be viable, while your forth and fifth would not (since they require you to select which trinket to upgrade or sacrifice).

I am not sure I understand the first one, are you suggesting a "flat" number of chests (dependent on the level, like 1 for every 100 levels) or a % increase of the ones you ACTUALLY got in a run? Because I am not sure the second option would be viable, since I am pretty sure the game randomly awards them at every boss kill, and does not keep track of them. If it's the first one, then it could be a possibility, although I am not sure I would invest precious idols on it, since the usefulness of silver chests is pretty low after a while.

I like the second one, works in a very similar way to Surplus Cooldown.

The third one is fine, but would require some extra coding and especially a VERY thorough balancing. The numbers you use as an example are way off, because if my DPS is 1E135, I don't really care if it gets dropped to 1E132 (resulting in just a few less idols, almost a neglegible quantity) if I can do a run in half the time... could be abused for some MASSIVE idols farming. Could be a good talent if, instead of reducing DPS by a fixed quantity or ratio, it increased the ramping speed of the difficulty.

All in all, some ideas are nice, others are not (imho). What I would rather see, anyway, are talents related to missions: reduced mission time, increased mission rewards, increased chance of epic mission, increased chance of success (especially if they make it so that you can start a mission even with less than the required number of crusaders), reduced cooldown between epic missions, and things along those lines.

i have no idea where you are getting your numbers knightmare, but on repeated free plays i get a heck of a lot more then 1 silver chest between 100 levels, more like 10-15 chests. it's a percentage already, a percentage chance, and that, being random, takes into account no info on what you already got that run, it can't it's random.