Command palette

I’m working on a small plugin that using command palette function and i have one small question (or request?)
there is possible to make options like this:

1) option 1 2) option 2 3) option 3
And so on, then when i press the number to select that item?

Autocomplete
Also, would be awesome if we can have those shortcut on autocomplete window (ex). Because is kinda easy to press a number rather than down arrow.

Sidebar
There is a way of changing things in sidebar? I would like to add/remove few things there.

Thanks