I like the idea, and definitely agree it needs to be PS restricted to stop spamming with generic pilots with mounds of ordnance, but it still makes me hesitant. It seems like a very valuable upgrade to me. I would price it at 2 points because it can seriously change how higher PS ships fly, and while you can feel it is justified against someone like Soontir Fel, it would suck if you were flying Wes Janson, or any other ship without repositioning actions. Just because you don't have a boost or BR, some bloke with a BR at PS 5 with an EPT can outmaneuver you every turn (not will, but a definite possibility for high PS ships that can't reposition). I think it would be a cool addition to the game, but it would either need to be 2 points, or one point and unique.
I think I prefer my PS war to be fought with other tools, specifically the black market slicing types. If all factions had access to an upgrade to punish aces with stress, then I think the problem with the PS race would be solved. No one has a problem with PS10 Luke Skywalker, because he can't Boost/BR out of arcs, or token stack. I can't remember the last time I heard someone moan about a single action interceptor, or other ace. Ships that are piling stress tokens, either from PtL, or self stressing with things like zuckuss definitely tip the scales though.
Putting an anti-stress modification that isn't faction restricted in the game not only brings life to the pilots that would benefit from Veteran Training, but it would also give a little boost to all of those unlucky pilots that don't have an EPT in the first place.