Diebroke, I am going to wait and see what is implemented; however, I will predict that Item 3 will be the result. We, the public, can tell if two or three happens by seeing if Cat E sells out before H, G, and/or F. If I am right, H, G, and F will all sell out before E. Regent is hoping E sells out before F and maybe G.
As for losing passengers in the lower categories, I don't think Regent will let that happen. I, and many others, choose our cruise line by choosing the line on which we like the lowest level accomodation. I cannot see Regent, whether in marketing or implementation, will chance "demeaning" their entry level product.