If they bring in proper tabs (not single click working tab either) then I'll go back in heart beat. I've been jumping around between atom, vs code, and sublime a lot over the last few months because of how all the editors are changing the way tabs work.

I'll have to check again, but I remember not being able to adjust the big sidebar either. On a vertical monitor it's a huge waste of space to have such a wide bar with only 4 buttons in it. It'd be nice to have some customization for that.