Please give me more than four buttons
ctrl esc tab and pipe are not enough for quick access.
I need at glance these as well: arrows (at least up/down). I can live without pipe and make it from keyboard, but take for example the ncdu utility and you will see how difficult is to use it with termius when you need to quickly use arrows and enter.
look at how HP ILO remote console iOS app has nicely put ALL keys available, it is the best keyboard on iOS. you could borrow that idea, I'm pretty sure it's not patented.