I do think it’s desirable. It’s unnecessary for users to keep track of which tool is best for which purpose if one tool can do it all. There’s no reason why one tool wouldn’t be able to; even in the worst case it could just automatically choose the best tool to answer your prompt, saving you the trouble of doing so.

A single tool isn’t going to meet all those needs yet

doesn’t want to mess with what she is familiar with

That does make change difficult.

why would a noun have a past tense