Love the idea! Though I would have used the singular imperative more, so e.g.

  salūtat (he/she/it salutes) -> salūtā (salute!)  
  sedēs (you sit) -> sedē (sit!)  
  tacēte (be quiet, y'all!) -> tacē (be quiet!)

and maybe the subjunctive for "us"-suggestions, so

  ambulāmus (we walk) -> ambulēmus (let's walk)