I’ve heard some people complain about this but they were the type that built hot rod computers specifically for gaming. For a casual gamer like me the wireless keyboards work fine. The only time I’ve seen a delay with them is when I have to PC bogged down with too many memory hog applications.

I’d guess a charger would cost extra to include in the package. You could probably use rechargeable batteries though.

I’ve never been a big fan of the context menu key so that’s not something I miss but I could see how someone might find it useful.

On the zoom slider, I haven’t ran into a problem with it like you mentioned, probably due to how I have my workspace setup.

The function keys, I’m not a big fan of them either. I’ve had them on a few other keyboards too. The only ones I ever used much were ones programmed to pop up calculator or notepad.

The thing I don’t like about the MX3200 is the mouse runs on batteries instead of a charger option, and 2 minor issues on the keyboard: no context menu key (I’m a keyboard ranger) and the zoom slider on the left side is prone to activation when for example, a piece of paper hits it or your rest your left hand near the edge. I don’t use any of the special features at all, so that’s neither a plus nor minus for me, though the Fn key is what replaced the context menu key, unfortunately.