This looks attractive to me, but I don't see anywhere that Interval will take deposits of points. From what I see on the website, it looks like the exchange using points is like a "request first". It is frustrating that MVC and Interval are so unclear in their websites!
You must have missed where I wrote this:
"The chart of points costs is on mvci.com, under Use Points -> Interval International"
You can see how many points are needed, and then trade that deposited unit at a later time. For me, I'd likely pick studios, high TDI. Generally, I have been always able to exchange my studios to larger units, usually 1 or 2BR. If you need a 3BR, then you might take a larger unit or if points just turn out that way to use them all. Once you decide how many points you have, and which deposit(s) you might want, call Marriott (not II) owner services and tell them what you want and they will deposit the week(s) into your II account to trade.
You definitely do NOT deposit points. Marriott deposits weeks for you to trade just as if you had deposited an equivalent week from your own ownership. The limitation is you cannot exchange into a MVCI property, only non MVCI.