Building the mouse Logitech won't make

I love my Logitech G603.

Was like $50 new, so nothing too expensive, has LIGHTSPEED wireless which has super low latency, but also has bluetooth in case you forget the dongle or can't use it for some reason. Or it's also really convenient to switch the mouse between 2 computers simply by pressing the button on the bottom, and it instantly switches.

Uses the HERO sensor which is really power efficient and has a slot for 2 AA batteries of which you only need to actually install 1. Lasts several months off a single AA battery, and also so I just use those rechargeable AA batteries with built in USB port under the cap, so I can just charge it from the computer if I need a little more juice.

I've modded it. The main switches are on separate, one sided PCB's and are easy to solder. Side switches are not standard, they're lower profile. Scroll and DPI switches are on the main PCB with a huge ground pad on one pin, I recommend just using a destructive method when removing them, or just leaving them alone. When it starts double clicking, just go for the swap. There's plenty of switches with different feel to choose from. Before disassembly get a set on new skates, you'll need to remove those long ones to get to the screws, they get wonky, don't slide as good anymore.

I have opened mine a few times to clean the wheel encoder. When it gets too dusty the scrolling can get wonky, but I just detach the whole encoder and dunk it in 90% alcohol and then put a dab of lube and then put it back together and it's good for several more months.

I managed to get the screws out without messing up the pads, and for me the mouse seems to stay clicked together just fine without any screws, so I just leave them out and can open it as much as I like without messing with the pads or screws.

I haven't had double clicking buttons yet, but yeah I had seen that the switches are not too hard to replace, so I will probably do that at some point.

I use the G502 X (https://www.logitechg.com/en-us/shop/p/g502-x-wireless-light...) which has similar hardware capabilities, but more importantly, it has a lot of buttons which are a legitimate productivity increase. Unfortinately, the price rose with tariffs and it may be harder to justify.