There has been some discussion of this over on Reddit (https://www.reddit.com/r/ShiftNrg/comments/7s7jje/how_to_control_that_delegates_actually_share_like/).

Shift delegates will become 'better' as Shift becomes better known and the delegates have to compete more and try harder to earn your votes. However, that will take time, of course. In other dPoS projects, some delegates have a policy of refunding the voting fees as an incentive to get you to vote for them, so maybe eventually some Shift delegates will do this too.

Having said that, voting in a dPoS system is also a case of cost vs. benefit for the voter. Considering that Shift's inflation rate is relatively low and the cost of voting is 1 Shift, you need to have quite a few Shift in your wallet before it's cost effective to vote (or else you have to be willing to be very patient). This will improve somewhat as delegates compete with each other and pay out a higher % of their profits, but even then there will be a threshold number of Shift below which voting won't be (financially) worth it. (Incidentally, this is one weakness of dPoS systems--small holders have less incentive to vote, so decisions are based on the votes of only the 'wealthier' subset of holders. Every system has strengths and flaws, of course; that just happens to be one of dPoS's).