Was thinking about Larian's homebrew Shove and how this would interact with the Polearm Mastery feat. Couldn't you just use your bonus attack to shove an enemy outside reach and every time the enemy comes back within the reach of your weapon, you get a free opportunity of attack? With the Sentinel feat also stopping the enemy from closing distance to within their own weapons reach?
How wouldn't combat devolve to something kin to a pinball game unless Larian makes evermore homebrew to accommodate their cheese?
Possibly an issue, but only if there were only one enemy and you could hit them reliably and they didn't have a ranged attack and their top priority was to get close to/move past your character (instead of another). It seems like a specific enough situation that a little cheese probably isn't a big deal.