The most useful thing I can think of is to add support for "lite accounts" along with associated functionality for "social account" login (e.g. google and facebook style login). More details on the idea are here: https://gitlab.syncad.com/hive/haf/-/issues/214
This would allow for new users to join using their existing social accounts and create a small number of posts. Later if they start to earn funds, they can create keys to guard those funds and potentially convert their lite account to a full Hive account. This would eliminate the initial friction for people who just want to join the community but don't want to deal with the crypto compelexities at the start.
We started working on this a while ago, but got sidetracked by other issues and we recently just returned to it. It along with improvements to wax (library for Hive apps) and workerbee (another library for building Hive apps that builds on top of wax) are our main focus at the moment.
RE: I opened a protocol PR: scale DHF payouts when HBD printing is suppressed