You as a community member are free to work on whatever you want. 
All of the code is open source and also quite a few people from the community joined the fellowship. If you need something, work on it or at least try to come up with a plan or some discussion. I know that you are already doing this.
We have spoken about this internally and came up with a plan on how to do the revamp. See: New host functions for non-Merklised optionally-persisted data-types (substrate#12577)