I checked out Assetto Corsa, and its way of implementing a modular UI. I found out it uses Python. I believe that Python will not only give us more options, but also be much faster than the current HTML UI.
Yes, I do realize this. What I am saying is if support for Python is added, it could really help out the UI in terms of speed.
I mean, it KINDA could, but the devs can optimize the already existing UI too instead of changing it to python. If they wanted to go all out they could just go with C or C++. Besides, its not HTML itself, its the current design. The previous navigator UI did not lag everything, the current one does.