UI & Design Improvments
Love Studio 3T, but to be totally honest it looks like an application out of the 90's. Visually, this is not a pretty app. I would love a modern look & a cleaner design. Visual Studio Code vs WebStorm is a great example of a modern vs old looking app. Please, please, please put more work into the design of this app.

Hi there, we made a lot of changes with 2020.6 – we hope you find these an improvement.
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Ed Lomonaco commented
I'd like to add, it'd be great if the connection manager worked better with smaller screens, I have a laptop at home that I can't create new connections on without having to connect to another monitor.
I agree giving it a new look (and add themes) would be great.