You might have more luck calling for devs on Steem for your Steem project, or better yet, switch your peoject to Hive instead.
Apart from that, maybe consider you might not need (or want) shared account control for your usecases. First there are escrow and multi-sig that could cover quite a few use cases. And if it doesn't, then maybe a shared account isn't the right solution either, and we may want to re-explore the concept of Capability-based facet contracts, preferably for Hive, not Steem.