Huh, that basic grimer can actually do quite some damage with salazzle or/and nihilego GX (and for just DCE as well). The total that would be possible is 20(base damage) +50(poison) +50(burned) +50(confused) + 30 (choice band) +10 (devoured field) and +30 (3 salazzle) = 240 for 1 DCE. Although getting this all at the same time is quite hard, I can see this being a pretty good deck.
Other decks I can think off with grimer and alolan muk are muk/garbodor, muk/muk gx and dark stuff and the salazzle/nihilego/grimer thing.