If I was going to totally gut the room, I would consider replacing the 60" tub with either one that is 54" (there are some out there) or a custom shower. That should give enough elbow room to put the toilet where the closet is. I don't like seeing the toilet first thing when you walk in the room.
I saw a pic once (sorry I don't have it) that appealed to me. It was probably custom, but to best describe it, picture several (probably six or eight feet total) of shallow (12" deep) upper kitchen cabinets used as base, with one of those shallow euro sinks on top, and of course a counter top. It looked like it would allow a lot of storage, yet still keep the floor open. I would do as much as I could fit where the sink and toilet currently are.