one gold is not worth 2 or 3 items
literally just normalise item drops, and have minions drop the same amount of items for everyone.
edit.: after reading the comments and checking out underlords, i changed my mind. dont just normalize item drops, adopt their system. it looks way more interesting. they let you chose one out of a few items, or permanent perks instead. and if you lose the pve round, you dont get to chose, but get a random item instead.