I've replaced the switches in a Logitech G305, and it wasn't too bad.

The mouse itself was fairly straight forward to get into. Move the pads, undo the screws, a little time probing around with a spudger.

Borrowed the switches out of a Raspberry Pi mouse I had in a spare parts bin. Opted to replace the feet at the same time.

Some minutes soldering later and reassembly, worked as well as it always had.