Easier roster manipulation

In the roster tab, a lot of commands are needed (e.g.: adding someone to the roster, edit a contact, accept a contact, refuse a contact, change status (in the room too or just for people in roster), etc)
And these commands would take a lot of parameters (for example when adding someone to the roster: his jid, his display-name (optional), some groups, an invite message…).

So, commands in the roster would be of one key. See this example:

By default, the input is replaced by a read-only line describing the meaning of some keys (defined, for example, by what roster item is selected)
"a→ change status"
The user types "a"
and the input appears, with a read-only text just before it, describing what he now needs to provide:
In this case, only 4 choice are possible (for the presence type), so the input should display the 4 presence (available, away, busy etc) and the user could choose between them with the arrow keys or a number.
The user presses Enter, and get prompted with the next "argument":
"Enter your personal message: "
Here goes the normal input, the user enters what he wants, and presses enter.

This whole process would be equivalent to "/show available I'm available"

The read-only line could also say "b→ Accept the user" only when the selected roster item is a contact with status of "none" or "to" and a Ask at "subscribe"
Typing "b" would prompt the user for a group, a display-name, etc (with the input), and validating all this would accept the contact.

Also, Escape and/or Ctrl+G would cancel any command currently started.

The command could also be accessible by typing them in the input, (like currently)
Pressing "/" would show the input to let the user enter any command (can be faster, but also less intuitive for the users who don't know poezio).

Any remark on this idea?