I'd leave it on the design room floor

I'd have it as a watermark across the entire back

The back? Why not proudly emblazon it large on the front? A proud and long association with rugby league from a high quality, local tourist trap deserves more than to just be stuck on the back IMO

It's a business decision. Diggerland give Cas money, Cas advertise Diggerland in a manner appropriate to the fee paid. It's not hard to grasp, so (assuming you've grasped it) I'm really not sure what your point is.

disapointed neither 3 or 4 were not a contender for the vote!

I like 3 & 4 as well.

I wouldn't.