I may be wrong of course, but IMO it looks like GW2 PvE is going back to it's roots atm. So it will be accessible to everyone again. Gw2 is not raiding mmo and it looks like it won't be. It's too late for it tbh. "Strike missions" will be surely really fun for many GW2 PvErs.
When players will get bored of "strike missions" someday, then Arena Net will again come up with something new. It's their idea on doing pve in Guild Wars 2. It was always like that. You never know what's next. They definitely like to improvise. Abandon old projects. And focus on doing brand new things.