We explored the west coast last summer in July. The beaches we visited on Sanibel and in Naples were not all that inviting. The water was a very deep green, and very, very warm.
I understand it is a lot different at other times of the year. Maybe we caught an algae bloom or something. We did drive into Captiva and the grounds of the South Seas plantation looked very lush. We didn't go into the resort itself.
We were very happy to get to Vero after our 4 days on the west coast. I'm sure a quick 4 days didn't do it justice, but we did drive through Sanibel (OK, not as beautiful as expected), Captiva, (We liked Captiva, very lush, but very private, not much access), Fort Myers Beach (tacky, kitschy, one resort after another, lacks the well manicured look of anything Disney) and Naples. Olde Naples is very beautiful. There was lots of traffic on the Tamiami Trail, the main north-south highway if you don't want to spend your life on interstates.
Overall, sandwiching our west coast visit between stays at the BWV and Vero may have set us up for disappointment...few places match
DVC resorts!