I'm with you guys on this. It would be nice if Rick stepped down from a spotlight for some time. There are many interesting old and new characters in the story, I hope Kirkman gives them more facetime, even or especially if it means fading Rick and Carl into background a little.
I agree we should see more of other people. But you have to think about what is going on in their lives recently. they had been attacked by a hoard of zombies, Jesus shows up, they learn about new communities around, now there is a bad living threat on the horizon.
With all of this big events, the leader of the group will be in the middle of everything. Their lives will be revolving around all of this, so it makes sense Rick is all over the story now. The other people are basically waiting to see what happens or digging more ditches. Their times will come when things settle down again. IMO anyway.