This could be a nice way for someone to pick up a few thousand dollars and learn the codebase, though it's also not a trivial amount of work (there have been a lot of changes to bitcoin core since the original Riecoin fork). Both Gatra and I can offer some technical assistance, though we're both a little over-busy with day jobs.
Community should focus in finding someone to update the Riecoin code to the latest in order to be able to list in DEXs.
Unfortunately i'm not a coder but from our discussion in bitcointalk Riecoin forum Gatra will allow any github commits(?) or as another community member stated "If someone is interested in updating the code, this person should just fork the code. Then if the update is good, it will de facto become the new reference wallet. We do not need Gatra, this project is now in the hands of the community."