Piratecat said:
I'll take the other extreme. The tradeoff on the elan pp/damage mitigation is horrible, and gets less useful as the PC rises in levels. It's a nice thing to have, but I just don't find it too powerful. It's also only usable once a round if I remember correctly; multiple damage sources are still a threat. I find the dwarf and the human to be more powerful races.
What Resistance and Resilience tend to do (combined with Vigor) is prevent the Elan from almost ever going unconscious or being taken out by a mentally affecting spell/power except at the very lowest of levels. Some skill points and a single feat for humans comes nowhere near that level of control. And sure, saving these abilities for the right time prevents the Psion from using other Quickened abilities at mid to high level, but Schism at level 7 (or 9) mostly takes care of that issue.
The Elan Psion I played only went unconscious once in 9 levels and that was at 3rd level in a battle which could have been a TPK (the DM had enemies using missile fire from above in the dark so that the PCs could not target the NPCs back and we could not leave because it took too long to drag unconscious PCs out of bow range) except the DM realized that he screwed up, so he ended up having the bad guys parley with us. She went unconscious because she was the only one who managed to get up and fight them on their ledge and so, she was being attacked by 6 NPCs all at once. When she ran out of PP and nearly out of hit points, she jumped off the ledge (where she went unconscious) so that the Paladin could heal her.
Actual playing experience has shown me of no other class/race combo in the game that is so capable of staying conscious and hence, staying alive. There might be one, but I am unaware of what combo that might be.
You are correct that multiple attacks per round can defeat this, but Vigor handles the vast majority of physical attacks and there are many defensive powers that can handle the brunt of the spell/power attacks. Also, if the DM is specifically targeting any PC with multiple spell attacks per round, then it really does not matter what abilities the PC has, sooner or later the PC will fall because sooner or later, the player will roll one or more ones on saves.