I personally like that both BOB and CAS can both enter WME.
Admitted, this gives the Spanish fleet in Lisbon 0 options for diverse openings - they will always open to BOB. This could be fixed by instead moving the vertical border between BOB/CAS and WME left about 3 mm, so that you still accomplish the option for Lis to then choose BOB or WME for the opening.
Note giving Spain the opening to WME makes them quite strong, for then they can convoy to Morocco in 01, which is killer.
Also as you've drawn it (the red line) you give them the option to open to CAS, which sets up the convoy to Mor. Giving Spain such an easy landing in Africa makes it unlikely that Austria or Ottoman will be able to colonize Africa first. Because of the 2 stuck Spanish armies in Spain, I think this would almost become the default opening for them.
-mike