I needed another corded mouse and this time around I thought of @PKL@mastodon.social and @pronk@mastodon.social instead of Logitech's shareholders. These guys make open source mice among other open source hardware under the brand Ploopy. You can order one from them, assembled or as a kit, or you could print and build it entirely by yourself.
The mouse itself is pretty great. Coming from a long line of Logitech (MX518/G5/G500/G502), it's a bit larger than what I'm used to but I think I'm getting accustomed to it.
Here's another shot of it:
I don't personally have a regular mouse, but most "gamer" mice have a DPI button.
I have seen several pro gamers use the DPI button on their mouse to rapidly change their precision while playing. I suspect it would take more practice than I'm willing to put in, but they seem to use it to great effect.
Ok.