Hey welcome back
Mirror reaction time has moved to the OSBot client sidebar, and is replaced with a slider from 0-500ms, the only hotkey that remains for mirror is the hide mirror text (shift-f2) and a cheeky green console screen (only mgi knows how to use this one ) with the ` key
Aside from that, start/stop/pause/mouse/keyboard input is all controlled via the same buttons, so dw about those too much. Nowadays stealth is being used a lot, along with new mouse. Hardware mouse not so much, and pretty much nothing changed for years (why fix something if it ain't broke), client has had a lot of updates in terms of API too.
Not sure if you joined pre-CLI though, some people are using command lines to start bots with parameters to save on time