Well, first, that isn’t allowed by the rules. Only people who were granted the Suggestor role can post anything like that. This is Reddit, and not the forums, so maybe the rule doesn’t properly apply, but it still feels wrong to me.
The game’s failure to support group content.
This is more of a Roblox problem, with the recent changes. However, this is still a solvable issue for AO.
This was one of the ideas proposed to fix the same issue you pointed out, but more in general rather than for the Dark Sea specifically.
Sure, that might work, but the issue of players using it to bounty hunt the crowd must be solved. A permanent PvP-off while in a party formed by teleporting to the outpost? Leaving the party instantly re-enables your PvP if it was on before, but not the other people’s (so you can’t damage them, but they can damage you) for 30 seconds or so while warning the entire group?
Navigating the Dark Sea is one-note and unrewarding.
I don’t completely agree with this point. The Dark Sea is essentially a nuked wasteland, so there can’t be content on every step, and there is quite some sense of progression across Insanity ranges. Dying wastes your time? Well, maybe, but if the changes I proposed will go through, then all the infuriating RNG deaths should end, and you’ll only die, if it was your fault to begin with.
These ideas and the benefits the levels unlock are great, in my opinion, and deserve a separate suggestion of their own, but more people than just two should be looking into those before stating the actual verdict. Redditors can’t really be trusted, so that audience below the post doesn’t count.
The lack of interaction in the Dark Sea.
This isn’t really relevant to the current issues discussed in the topic. We’re here to give attention to the present problems that harm the playing experience. The point you bring up is “The Dark Sea wasn’t updated enough, and is lacking features”, which is solvable just by creating an another Dark Sea update.
The features you propose might get looked into by other people later, but they aren’t on the priority list. Fixing the already existing stuff comes before adding something new.