Frankly I'm all right with that -- it's clear Morrison's got plenty of stories left to tell in his own good time, but I'm happy to see him take a break and get back to Seaguy.
I imagine that if I tried to explain how excited I am about more Seaguy, it would quickly enter the realm of gushing superlatives. I'm not against Morrison working on mainline continuity stories, but his stories from the margins don't have to worry how other writers will handle his concepts. (Also, I haven't read his X-Men run, which probably disposes me toward him more than most comic fans.)
The one contrary example that comes to mind is that I imagine that someone else could do more with the Super Young Team. They work as a one-note commentary on Japanese celebrity, but the only one who I want to know more about is [spoiler]Most Excellent Superbat[/spoiler].
The way they fade out of the story is also a pointed comment on how I actually imagine they’ll fare as characters in the DC Universe!
Without taking behind-the-scenes information into account (other boards complaining that it is too confusing, is this a sigil to banish Didio's dark influence from DC guys?), I had a lot of fun with Final Crisis. I think that I like high cosmic heroics with lots of room for street and non-mainstream characters. Also, no time-punching! The only thing that I'm confused about is [spoiler]why Detective Chimp is immune to the Anti-Life Equation[/spoiler].