Considering the damage that OMD did:
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OMD created a permanent lasting status-quo in Spider-Man. What it did was,
it made Spider-Man's continuity a thing where nothing matters. No matter what happens, no matter how many writers come and go, Peter will mostly always be reset to a certain version of him (which Marvel openly refers to as "Factory Defaults"). So nothing is meant to stick and last. Whereas before OMD, with the marriage you did have that sense of something sticking and lasting. Remember until the 90s Clone Saga or the second clone saga, the Spider-Man continuity had realism and consequences. Characters who died stayed dead, there were never any retcons as such, stuff carried over and continuity was progressive and forward-facing. The Second Clone Saga destroyed those norms, and where JMS and others seemed to try and repair it...OMD doubled down on that to the extent that it's impossible to go back as long as it remains enforced.
So removing OMD is essential for 616 Spider-Man to feel relevant and consequential and for the continuity to truly represent what it is in the wider franchise, the home of the original Spider-Man of AF#15 filled with ideas, pathways, and concepts for multiple stories and adventures as he grows up. With OMD, Quesada and others at Marvel, wedded a conception of Spider-Man dating to 2000 (Spider-Man is about youth, demonstrably not the viewpoint about Spider-Man by Lee/Ditko/Stern and others) and imposed it permanently on the continuity and they did that for the sake of present grudges rather than any real conception of the future (though of course they said that as justification).
This is pretty succinct. In so far as consensus goes, I would say this covers the definitions of "Reversed" and "Addressed" pretty well.
Speaking personally, Ideally I would like "Addressed and Reversed" above all.
-- I want Spider-Man to learn about this, go nuts, and then put together a team comprising himself, Loki (that deal that he offered back in JMS' run), Doctor Strange, Doctor Doom, Ghost Rider, Silver Surfer to team up and march into Hell and destroy and kill Mephisto (with Doom being the one to do it after Spider-Man chickens out at the last moment y'know, for brand reasons). Mephisto is an obnoxious and terrible villain at the best of times, killing him off for a short period and leaving hell under new management would be a good hook for stories for the cosmic-magic side, and not a great loss. It would also be a great action series, would sell well and attract a big audience.
-- Spider-Man and Mary Jane than confront one another and wonder if they should get married again given all they went through once and so on. Eventually they do, and in the process the couple confront issues about whether Peter's relationships with Carlie, MJ's relationships with Bobby count as adultery since it took place after OMD when they were married but they were living together and broken up when it happened...and then eventually they get married again.
I am okay with it being "Reversed without being Addressed".
-- As far as Reversal goes. I don't see anything too complicated in this. It's a single issue's work. Simply have Peter and MJ in the current titles get married. As soon as they say "I do" and are pronounced husband and wife, let them kiss...and then they have a look where they realize they remember and MJ says "I told you we'd get back". And that's it. Mephisto sulks offscreen and decides that the entire thing (a cosmic being working to fix details in Spider-Man's life) took much of his time and he moves on.
As for it being Addressed without any condition of Reversal
-- I think the minute you address the story, you are setting the table for reversal one way or another. Reversal might not happen right away.
-- Once addressed, Peter and MJ would have to reassess the relationships they had since OMD with Carlie, with Bobby (in MJ's case), and so on and so forth.
-- They would have two versions of their memories...one in which they were married and one in which they are single and emotionally it's not the same, it'll be like remembering a second life at the same time as you are living one.
-- Dramatically as a writer, Spencer will love exploring this.
Ultimately it's not Spencer's decision, no matter how much he would prefer it (as he seems to), to reverse this. But by addressing it and exploring the consequences and the responses by audiences, and so on...the fact that Quesada is no longer Chief Creative Officer (which means that over the last few months, his name doesn't appear on the credits of any Marvel comic which makes me quite happy as a whole), that could set the ball rolling.
One way or another, the hope of the OMD people, i.e. the marriage goes away and never becomes an issue again...that hasn't happened, that isn't happening, and that will never happen. It'll never go away.