Maybe I'm just tripping, but I think I remember back in the day, that mages could lose concentration even with a perfected spell, and the imms changed it so that if you had a spell perfected, at the very least you wouldn't lose your concentration casting it. Combat spells still fail, perfected or not, they don't always achieve their purpose. Utility spells failing when perfected, would suck yack balls. I can't imagine trying to shield my group as an invoker with the failure rate being ~5% as you suggest.

My 2 cents old pal? Don't try to change the way the game is, unless you want to Imm, don't worry about how others play the game, just focus on being the best at it that you can be, and as some of Vershelt's better moments showed, I think that'll take you a lot further down the way on funstick road.