It's a wierd setup in that Hickman has created a scenario where he necessarily doesn't have to deliver the "else". With X-men he can keep seeding and someone else will pick it up. That person doesn't even have to finish it. Just keep the ball in movement. Yet even going through the pain of seting this structure up and placing himself in charge of it as a version of a showrunner he's not really using it.
Maybe he's afraid of crossover disdain, in the sense that someone outside of an official crossover shouldn't have to pick up a issue where the idea was established X-men and then ran for 1-4 issues in Marauders.
Personally I think that there are two larger problems working atm:
1) Corona set us back. We know it, they know it. Yet we still feel something else. We can't help but look at the publishing pace as it is and not be more lenient. If Hickman could have kept his original plan we would have been through X of swords by now and moving along with possibly more ideas being further explored. We all know this. Yet we can't help but judge what we have been given in the amount of time that has passed.
2) The writers Hickman has picked aren't doing the work he needs them to do. If you take away the shine of the current direction then many of the books wouldn't have made us terribly excited. Several options existed for Hickman. The most obvious one's would be to pick writers who write similarily so he can just keep going in his direction but faster. Or to pick writers who writes in a different style. Fleshing out the angles and holes he leaves behind. What we have gotten isn't really doing any of those. It's a very bland mix. Yet this problem is very much in his control. He can fix this easily but he hasn't shown any desire to do so. Seemingly content and proud of the current status.