While I do think that steem-ua could improve the engagement on the Steem blockchain, I also see a problem.
I do feel that not delegating SP to steem-ua could harm your growth here. If lots of people in your community do delegate to steem-ua there votes will have less value. They will profit from it because they will get between 1 and 7 upvotes from steem-ua per week. But if you don't do the same, your increase will decrease. This will correct itself after a few months, because the ones who did delegate will see their account grow faster than before.
But I do like the project and what they are trying to do with it!