This would have a cascading affect though. There are reasons why Blurt doesn't have as many apps like Hive and one of those are their fees for transactions. HIve isn't just a blogging platform, it's an Dapp ecosystem. I don't know if things like HIve Engine, Splinterlands, Rising Star, DCrops, DCity, Exode, Project Blank etc. exist if every transaction has a fee involved no matter how small.
(I could be completely wrong though about my assumptions above, I'm not a programmer.)
Also I think it would be weird to be the blockchain with fees while Steem has free transcactions. Just feels wrong to me for some reason.
RE: Hive Accounts Should Cost 5 HBD