Yea, I think the negative effects can be seen by looking at the polar extremes of focused voting:
-0.1% strength per vote you have to vote on hundreds of things to drain down your voting power, not reasonable to vote up yourself for all of those so you'll spread it around.
-100% strength per vote you only have to vote on 1 thing to drain down your voting power, easy to use it all on yourself and great incentive to do that.
so moving to higher strength and faster drain is a step in that direction, hopefully it has some good side effects to make up for it