The current collection of stores is great, but we all know that more can always be added. Personally, I'd like my Twitch library included.

I am far less familiar with others, so what would you like to see?

Other devs will have to program the plugins themselves. That said, anything goes, including future storefronts.

Not really, you can just use the open source library on github. https://github.com/gogcom/galaxy-integrations-python-api

That's what I meant.