Switching to wgpu as the default is a definite possibility, but something should be said for the simplicity of the glow backend. wgpu is a big beast, which takes more time to compile, and for a lot of eframe users it is simply over-kill.

…but then again, if you want simplicity and fast compiles, I can recommend the egui-miniquad backend. It's not as fully-featured as eframe, but with some love it could definitely get there.