I won't try to quote everyone because I suck at it. Regarding robots, EMP grenades were super OP in my first play but I had high throwing. I'm assuming even with low or no throwing they can still be used at close range if I turn my shield off first. Regarding Mentors, that's a big reason I want a full PSI build. I am looking for maximum discovery, interaction, new "oooh cool" moments above all. The number of times I discovered mentors/pillars in cool ways in first playthrough spurred my choice of PSI this time through, along with the sheer variety of abilities. This entire playthrough is about doing and finding cool stuffs, including dialog options. I'm torn on Normal vs Hard because I really don't want to worry about perfectly optimizing my combat build, but on the other hand the first play was often too easy, particularly the final boss (ignore tents, stab stab dead). Then again, a few fights such as junkyard dogs and specific groups of stealthy Lurkers were quite tough.
Also torn on Stealth. Yes, getting the jump on enemies, and perhaps preserving Tranquility is important. I'm concerned about being in range when I initiate combat though, because losing all movement points is rough...a catch/22 with Stealth, you need it high enough to get in range of abilities, but I don't want to have to max it out.
Played a few levels with Psychosis and, while I prefer the more radical blitz playstyle in theory, PSI pool management is excessive. You really don't get much of it even with maxed Will. I dunno...my first playthrough was all about getting the jump too (purely via Init/positioning/detection, not Stealth). Not intentionally, it just worked out that way as a crit-based, lowish CON character. I was looking to change it up as much as possible so if I do need to go first, it will prolly be via Stealth. Another tricky bit is how much AGI for stealth and/or Initiative. Points I put into AGI will come out of CON, or to a lesser degree INT.
I think I've got a good idea of how to go and I'll post my build in a bit. I don't entirely plan the leveling process though, so I take feats as I go. More fun that way. Discovery>min/max.