I feel like Angel Arena Allstars should include a default mode:
-ar -r0 -life 200
Default mode for Angel Arena Allstars: -ar -r0 -life 200
Though, the life may be a bit much, these are just commonly known modes and should be made official. If -life won't be included, at-least -ar -r0 at the least.
Edit: To elaborate the modes, -ar (being all random ofc) and -r0 (creep respawn time at 0 seconds, which makes farming easier) and -life 200 (number of lives each time has, by having a lot = more farming time for higher items, godly heroes etc.) again, commonly known.