What I am really worried about is, that all this "unified backends" claims we can see for 1-2 years, are basically not happening. Premium is basically a Project for the web and we can still see the drastic outcome of disintegration.
How comes, that card design differs (Planner card can display image, checklist), how comes, messages in Planner are integrated, whereas in Premium discussions lead to Teams? Stuff like
Efforts / durability of task calculation are pure mess and look into the Premium grid - it looks like Excel, no separation, just look into Monday, how thigs are supposed to look.
If I was supposed to choose one of those two worlds, I would ditch all the Project for the web heritage and extend / develop on Planner only. This is not integration, this is still keeping two separate products under the hood :-(