"Fuck just saying Nedna sounds stupid". Meh, I don't think it sounds that bad, but anyway they are using that in the promos more than in the actual episode, so I couldn't care less.
"Regardless Simpsons isn't a show that needs character arcs." Well, they don't NEED them, but they can be fine and interesting, especially at this point. And I really enjoyed some of the ones they have used, like Skinner/Edna.
"They ruined every arc they ever brought in Homer's mom/Skinner and Edna etc. " That's kind of true, but it's not because the character arc was bad. It was because the changes of executive producers leads to other decissions and at some point they always try to go back to the status quo. They could have ended those character arcs much better or still continue with them, but the fact that the endings weren't so good doesn't mean they couldn't have done it and it doesn't mean they weren't enjoyable before.
"Change doesn't always mean something better will occur". That's completely true. It all depends of the writing that can be just as good or as bad whether there are changes or not. But sometimes it seems a change is a good thing to make the viewers and even the writers more involved in the story. I liked how they developed the romance in this episode and the hints of new things that could happen, like Edna living next to Bart or Edna's attitude towards Homer abusing of Ned. Maybe in the next episode they don't know what to do with this, but for now these look like nice and fresh ideas.
And it's not like I want every character arc to end happily and with a wedding, so I don't necessarily want them together forever. The problem with other character arcs , like Edna-Skinner, wasn't so much that they didn't get married, but mainly that the episode that ended with the relationship wasn't all that good and the conflict was extremely forced and contrived. Suddenly introducing Comic Book Guy in the love triangle was a very odd decission and the problems in the wedding weren't handled in a down to earth way, but more like a soap opera. I think Edna and Skinner as a married couple would have worked- I'm not sure about Ned and Edna getting married- but a well written episode about them breaking up could have been a good ending too. It's just that it seemed like they came up with the most bizarre cop out to end the thing.