Marvel have slowly but surely been streamlining and trimming down characters/alternative versions. This is a neat idea and makes everything just that little more accessible.
Personally, I think Marvel are at a pretty decent high at the moment, after a bit of a wobble in the 10s just after Secret Wars.
I think I’d like more to see stories progress naturally in their own comic. war of the realms/absolute carnage...even to go back to Siege, Infinity...they all could have been told in the pages of the story they were started in. And it would have been a blast and made those issues of Thor/Venom/whatever memorable ones as they were pretty big things to happen. So cut down on the events, but hype the stories within the comics as much as you would an event. Immortal Hulk is doing brilliantly and that doesn’t goes to show you don’t need everything to be a crossover.
Push obscure characters just that little bit more...Karnak, Black Knight etc...there’s potential in them so it’d be cool to see Marvel he daring.
And mainly for me would be create more villains. We know what to expect when villain A turns up, it’s about time we introduced more so we genuinely don’t know what to expect. Knull is doing good so far at this. I think Captain Marvels run is having a good try at new villains - id genuinely like to see Vox Supreme appear again.