The group you are in is a DVC group, as well as II, so its going to be heavily focussed on getting DVC exchanges as well as helping DVC owners to get other exchanges.
MVC Crystal Shores Marco Island is a tough exchange to get as GrayFal says, that's down to availability, not just Trading power. You'll need to have a request in using an MVC week to have a decent chance of getting that.
The Hyatts, particularly Key West are available as getaways, so that would be a good solution for that without committing. A lot of the HWP and HYB getaway inventory has already gone, but there are still dates there at a price that is cheaper than maint fees for the weeks.
The CIG points offer that is making the rounds is a stand alone product, not something that you can use your MVC week to convert to points to use. You buy a set number of points for a set number of years for an up front price and then get an II gold level membership that they are deposited into for you to use. After that time, you can just let it lapse or buy more as you need. There are a load of vacation club type products that operate this way, though usually for longer time periods.