everything but ambush sucks, 10% of the time is spent killing monsters aka the whole point of the game, the rest is running through massive maps to reach the objectives
ambush is the only one where the entire thing is 100% kill shit, which is way more fun than running simulator
but there are people who like the running all day playstyle, so my suggestion is make some sort of item you can socket into monolith webs to modify what kind of objective you get, so people can pick the style of monos they get, same way you can influence prophecies with them discs in circle of fortune.