[imh]

As languages with more interesting type systems come along, more powerful IDE tooling will be possible (e.g. idris 2/blodwen code completion https://twitter.com/edwinbrady/status/1050528305743622147)

More hopefully, maybe new language developers will put more work into easier and easier FFIs? How often have you thought "I wish language X could catch on, but all the useful libraries are in language Y?"