"In a gaming scene the word cheese is used to describe strategies or ways of playing that are really powerful and do not require much skill from the players side at the same time. The term is widely used both in video games and tabletop games alike."
high ground, backstab, excessive spell scrolls, shove, barrelmancy etc. are all cheese to me. They have too much reward for how little skill they require. This would be for the game now, and if they are still there in release it well be cheese then.
Highground needs to be toned back.
Backstab should only give it with flanking OR stealth.
I think spell scrolls should be toned back in the loot a bit BUT made something expensive you can find at appropriate merchants. A reward for Wizards to inscribe or item to carefully use for anyone else.
Shove is.. fine I guess, just tone back.
Barrels should either be toned back OR be made so much less common, so you still get rewarded for keeping one intact and using it later BUT you don't have the ability to use them for even a half or quarter of the fights.
