And how will enemies be able to follow you when you jump up to a perch up 10 meters up and enemies have no way to reach you because they can't jump?
Either they don't, the devs introduce jumping to the enemies, or add in archer enemies at places where players can jump on rooftops. Like the one in whoodunit, there's archer enemies at the rooftops, that's good design, they should do more of that instead of placing packs of enemies around corridors.
It doesn't matter if you agree with it or not. It's simply how DDO quests is. Short of getting yourself a time machine, going back in time and then telling the original DDO Devs how BG3 was a unique success that they should try to replicate (and also keep better notes to pass down), the core of how DDO quests works will need adjustment for allowing "stuff that the devs didn't intend for" inside quests.
Not really sure what you mean. In the demon defence quest in the marketplace, with high enough jump, you can jump on one of the ledges, and then you can use that to jump ontop of another ledge and just stay there while the mobs cluelesly walk around and keep firing at them. I thought that was pretty good design, they just need to tweak it by adding in more ranged waves and it'd be perfect I'd say.
There's other quests like that, in newcomer quest about freeing the ice dragon at the end from some wizard, there's a puzzle you could skip most of it if you had a dash ability and slowfall. Another brilliant design, being able to skip a puzzle using a character's build and some player experimentation.
There's other quests like that too, so what's your point? The quests had these cool quirks, maybe even moreso in the past, that got squished by wrong thinking, from either new devs, or the wrong fanbase complaining about what they don't know.
You were here for the Multi-Curse thing weren't you? Did you hear much of a peep from players or the community until someone was disgruntled and posted about it?
If you've been here long enough, you'll know that is not going to be happening.
Of course this isn't going to happen, it doesn't mean we can't discuss about better designs in the future for these type of game.
Or at the very least, hope...