They do look good. You still have the nice maxi duna
And I love the Trixie platform in it. The only thing I could think of is another platform like the Trixie one maybe in the back left corner of Joey's tank (if it doesn't interfere with his pile too much!) More as something to go under rather than climb on. And maybe a deeper digging area at the left side of the maxi duna - tricky though because of the wheel. Unless you had the wheel at the left end with a bendy stick fence across the cage, so you could have lower substrate at the left end and higher beyond it. But really it looks good anyway!
I was thinking of this one re the wheel/fence - I always remember how she did the levels - but it's a different kind of set up
Obi's natural set up is complete!