For other Fediverse software:

• Misskey is unmistakable which already makes it a good name
• PeerTube is on par with YouTube and is perfectly transparent as a description of software: “YouTube but with P2P”
• Writefreely is another clear but already proper name, definitely better than Medium or Substack (ony Medium’s advantage - it sounds better in non-English languages)
• Loops and Friendica remind better of their purposes than TikTok/Vine and Facebook
• … on the other hand, every Threadiverse app, no matter if it is /kbin, Mbin, Lemmy or PieFed, fails with it

Pole here.

A federated MediaMarkt. Or at least something with shopping, selling something. Definitely a German product. Should be a quality one, but I would name my instance (or a national one) differently, perhaps in a local language.

There is no point in making worldwide Flohmarkt instances (same for Mobilizon), so, the naming should be less a problem than you expect

This is for connecting Bluesky accounts to Mastodon (and the other way too).

An OP wants to use Bluesky app as a client of Mastodon

Did you mean SkyBridge, but in reverse?

Re: 4

No app for Bluesky will help with this, because the purpose for the client (“app”) is to use the API (a Bluesky one right now). And Mastodon’s API provides exactly these not-federating like numbers - the problem you actually try to solve.
The number of likes and boosts has to be fetched directly from an original instance. Moshidon for Android does already like this and Fedilab for Android allows to fetch an entire conversation.
Bluesky clients have no concept for this they needed it.