The only thing it would help is hide u, which is good but there are better ways
eg: when ur boosting and u press a key, u phase out of gameplay, ( become invisable ) when u do everything is inverted, and u can move around without others seeing u, ( in other words, u move so fast they do see u ) of course u wouldn't be able to attack, other wise it would be unfair, and u'd always have to move.
this isn't impossible and would be a nice extra, but i dought it'll be in ^^;
( ok i strayed a lil anyway from the topic )
the only good thing about lowering/hiding your power level is that if someone see u, think's your a easy target, fires at u, then you come out the explosion, baffling them. then u can smack them one, or just fire. either it's not that of idea, thats its only advantage....