You need a giant preface at the very front of this list to stress the fact this list is just speaking in very general terms and most of the time a feat can't be evaluated in isolation. Case in point - conditioning is hot garbage by itself, but it's a very good feat if you combined it w/ other feats, food and gears to stack damage reduction for a very specific type of build.
There are other feats that are also up to personal opinion, case in point - I considered Barrel Stare and Gun Fu both top tier feats while others disagree:
Gun Fu-down to priority 3- You need to be in melee range for the feat to apply, and you get a max of 64 extra guns skill at level 30. It bets you more damage more consistently to take blindsiding.
Barrel stare-down to 3- mutually exclusive effect with leading shot that only works at point blank, better to stay out of melee range and use leading shot.
These melee range gun feats are highly effective when you combine them w/ Hit and Run + high MP build. First, Gun-Fu and Blindsiding are not mutually exclusive. Second, let's looking at the extreme side of things: at 16 PER and 160 base Gun skills = 323 effective and 64 extra Gun skills is just slightly below 20% which isn't insignificant so I don't get the hate. Gun-Fu use case are for high DEX max melee skill Versatility (usually un-spec as those spec points are more effective elsewhere) gun build, translation: 210 effective Gun skill, Gun-Fu adding 64 on top meaning a 30% increase, showing good value.
edit: Just dig out my Gun-Fu char build file - it actually add 96 Guns skill (18 DEX, max melee, 3 PER, 70 base Guns = 210 effective Guns skills, 4 spec points on Gun-Fu. Final result is 96/210 = 45% increase. Also note the 4 spec point on Gun-Fu is more effective compare to spec in Versatility)Barrel Stare, again imho not mutually exclusive w/ Leading Shot but should be treated as an additional angle of attack when using shotgun. There's nothing stopping you from using Leading shot when you are far away and Barrel Stare for max damage whenever you get the chance. It's fine if you don't want this additional angle of attack, but you can't say this feat is low value when it's not.
Improved unarmed combat-up is obviously only good when you are fighting bare fist but it's garbage for every other build. All in all there are just way too much work adding in enough details and explanations to make this type of list useful. I applaud OP for trying tho as no way in hell I'm up for it.