Progress Bars
It would be useful to have a progressbar to display download progress. Large downloads (e.g. Tamriel Data, when it's added) are the main reason at the moment that no output will be printed for a nontrivial amount of time and it would be useful to inform the user that work is progressing.
Something similar could be used to indicate progress when doing dependency resolution, as that may become slow once many pybuilds are added to the repository. That being said, it is likely that it will not be particularly slow outside of full updates as most mods will have very small dependency trees.
Could implement using https://pypi.org/project/progressbar2/