Welcome! I joined recently myself - you look to have a LOT more experience than me, though.
I was in the Maldives in December, and am likewise wondering, "what next?". My current if- money-were-no-object list includes the Philippines, Indonesia, and the Seychelles. I'm also pretty tempted by Galapagos - there's a thread running on that at the moment which makes it sound pretty tempting. In practice, I fear I need to go somewhere cheaper and more practical to build up some experience first. Back to Egypt it is, then.