I use Friendica. And friendica hast a bluesky-adapter built-in.
As admin i can activate it, and users can configure it for their needs...
So... instead of building such bridges it would be a great idea to build native support for different protocols in the services like mastodon, pleroma, *key...
Fill feature-requests to your projects to build a pressure-peergroup for your devs to demonstrate the need for.
For my part...
I left the commercial serviceproviders, when i discovered the fediverse. They are destroying the internet and they are also destroying democraties all over the world with their algorithms and monetarization of their users ...
This is evident. Free democratic countries do not need humanophobe tech-bros from silicon-valley or somewhere else.
So... i won't support their business-model. Free internet works by people like me, who host their own services, and work by devs of free software, who build code for selfhosters.
Think about, whose business you will support with your bridge.