Also is there still no good registry for solidity libraries? +1 for auto deployments straight from there! 

I know that was kind of the vision for ZeppelinOS way back... And I'm surprised nobody's done it yet!

Unlock Protocol founder.
Previously founder at Superfeedr (RSS push API) acquired by Medium!

https://ouvre-boite.com

we're doing some upgrades to our contract publishing flow right now, about to add way more to the catalog https://thirdweb.com/explore

and anyone can publish their own :)

Ho I can think of a lot! For example convenience libraries to interract with Uniswap, bonding curves, vesting contracts... etc