I may be in a minority here, but I'm going to request ASP.NET Core support. While it may have had a bad rap in the past, the new stuff is open source and runs on linux. Doing so would bring in a class of developers who could really benefit from Gomix. I'd see it being very useful both in training and in full app dev. If I understand how Gomix works (web IDE, something something, containers, magic, proxy ), it should be possible to drop in as there are containers for ASP.NET Core on Linux that should at least get you started.
Keep up the good work!