I don't often use Gitlab, I just logged in this morning to update my 2FA and saw the new nav in the profile. Enabled it and instantly felt a lot more compelled to use the site.
I'm a big fan of your guys' work but using Github for a variety of reasons (UI is a big reason why), so I really mean it when I say the improvement is noticeable.
BTW, have you thought about talking to Zenhub to get a "Zenlab"? Given that Gitlab implements a lot more than Github in terms of Zenhub features it might be worth looking into.
We have not talked with them. I love the work of ZenHub. But our strategy would be to add the features to GitLab itself instead of running it in another application. Feel free to submit/upvote an issue for something you would love to see.
Zenhub being separate from Github has actually been kind of a nice thing for us. And I can imagine it's a good deal for github as well -- I think Github adding all the features that Zenhub offers would be massive bloat. It being separate and easily removed makes it much nicer.