The only way to make things hard for you at this point is to make things unfair, which is probably not wanted. In general, every encounter has a gimmick, or mechanic. Once you learn to counter said mechanic, then it begins to feel easy for you, even if it's actually hard. The only reason raids seem hard is that it'll kill you if any one of those nine other people don't counter a mechanic. So, yeah. Not much else they can really do unless they turn open world trash mobs into dozens of legendary mobs at level 85 or something. Hardly anyone would want that.