The 2HP stuff isn't stuffed in pretty densely. Also, much of it is mostly set-n-forget kind of modules. You might want to move Pluck over one module so that it has a bit more clearance.

Also the Batumi has a 3HP expander called the Poti. It's not too expensive and gives front panel access to portions of the Batumi that can only be accessed via jumpers on the back. If there's 3HP to be found in the rack it might be worth it. Also, why you should have spare rackspace in all of your builds.