haha dont think u will get rid of me so easily!! (joke)
but ye... here you are, another wave!
why not something like an upgrade for your hero? like lose less health/s or lose less attack speed when you are sober or lose less mana/s ?
and retaking the idea of the tasty meat and ugly mask, put something like this:
the ugly mask makes enemies run randomly around the screen.
the tasty meat should be something unclickable but it taunts nearby foes and has 9999999 armor and health (since its unclickable, no one is going to notice that), it should last like 10 secs, either with charges or not. if its unlimited, put its price a lot bigger than ugly mask, because all foes stay in a single place, meaning you can use AoE spells on them and easily kill tons of foes, im pretty sure that would be a real better crownd control than the ugly mask.
(if you can, make bosses immune to the taunt

or them be able to one-hit the meat)
make a flag shop, there you can buy some flags which increase the morale of nearby people (increases atk speed, HP regen ,etc...) with a beer symbol! lol
make each flag give a different bonus and an ultimate flag with gives all auras.
o yeah and i think Animal Porn Magazine is a better item to be upgraded to ugly mask than big book of pirate insults (because the description says its scary! lol)
make something like a scope for the gunner's gun, greatly increasing the range or damage, but increasing attack speed because you are aiming with the scope!
also somekind of trainers, like u buy skills, (which are passive and dont have an icon, so they wont use room in the action bar) for gunners something like
Sniper Training, when you stand still for sometime, your damage is increased, for melee, an upgraded version of the Defend ability or upgraded beer rage (or whatever its called, the skill which the champion has to increase atk speed) for adepts (and for all the other adepts' ranks) a bouncing attack or a multi shot ability OR increases the healing effect of his healings but increases the cooldown OR descreases the healing done but descreases the cooldown, same goes for damage spells
ideas for items...
a shield which ricochetes back bullets and randomly hits someone else (if thats possible, if not, just make the shield give a % to ricochete bullets (miss))
a throwable beer which makes people miss their attacks (the beer affects a tiny area) and since you and all your allies are already drunk, it doesnt affect you, instead it heals your mana! (i dont think thats gona be easy to do so.... just put the AoE thing)
an Enchanted Khorium Shield, gives some real good armor and chance to block (miss), but its REAL expensive, slows you down and can throw some fireballs! lol (or give magic resistence) or everytime you block an attack, a tiny explosion occurs, damaging all foes
Edit: Lawl, i wanted to make this reply in the exactly day month and time, but i took 20 mins to make this T.T
Edit2... : Oh and if you have the Animal Porn Magazine / Big Book of Pirate Insults, give the player a discount for buying the ugly mask! (just make another button for it, but doesnt cost gold, just cost the item) that would be better than upgrading the item into it, because if no one has it, then no ugly mask! =(
Edit3......... : Yeah, i dissapered for sometime but thats because i got addicted on a game, and after playing it for.... 1 entire month... its boring now... lol so ima be back here!