The meta was an underlying thought I was considering if this wasnt for a jam(its current state is already great for the timeframe tho!). Small incremental changes usually feel great especially when the player gets to choose how they are modifying their team. +1 Movement, or paladin can push 2 enemies at the same time, or rogue could swap with target instead of pull, that sorta stuff. A few of them could even be scaled back and have their current power be an upgrade like rogue's range could start at 3, paladin start with 1 push etc. Special goals, or style bonuses in combat could encourage taking risks for more rewards such as XP/Currency/Secret Levels?? which then could tie back in to the progression system.