I think the rewards awarded is the same whether you post on proofofbrain.blog, ecency, peakd, or hive.blog. I think the idea of locking a community into a particular front end is antithetical to the ethos of decentralization. If the lion's share of your author rewards is in POB only, then it might make sense for you to use proofofbrain.io.

These proceeds I hope would go into building one of the two POB front ends. I got some at the very beginning and then kind of just kept this going out of my own pocket.