I tried to use the dual pounder as a mortar, looking up and shooting. The projectiles sailed up, then they disappeared. How about indirect fire weapons for a MAX? They would be hard to master, but very valuable tools on some base assaults.
http://forums.station.sony.com/ps2/index.php?threads/may-class-revamp-max.83015/ Roadmap is here for a reason... look through it first.