Is it just the owners or any members of SVN? If you do not belong to SVN, why should your reserved best week given to SVN members and you got a weak trading week. It is not fair for the owner who purchase resale and cannot join SVN.
I can't speak to whether or not they also do this to SVN members, but I would assume so if they own a float week. This has been going on for years with many, many resorts and is similar to the problems that people face when their resort chooses to bulk-spacebank weeks. It's happened to me in the past with another resort. There's not much you can do about it. If you really have an issue with this practice, then you should either purchase a fixed week or a week that only floats during a season that would be an acceptable deposit within your chosen exchange company.
Mon2Rey- The significance is that when resorts operate in this fashion, they will not usually deposit the highest trading weeks at the resort. Since you own at such a great resort, you may have many weeks that trade well and may not be affected that much...I have no idea. Also, II is very much driven by the quality of your resort and that impacts greatly on your trade power. RCI on the other hand is much more driven by supply and demand. If you owned at a lower quality resort within RCI that had this policy, then I would be much more concerned.
Also, a week is not a week. All weeks are not created equal. Indeed, all red weeks are not treated the same. There are all sorts of shades of pink in between. If you think about it, the exchange companies label certain areas such as the Caribbean and So. Cal as being red all year round. We know that this is simply not true. It's all a marketing tool. This is the dirty little secret of timesharing. I would suggest that you read Steve Nelson's article entitled "Timesharing 101" which is contained within the "Advice" section here on TUG for further explaination. The link to the Advice section is at the top of this page and on the home page.
That being said, I had Starwood deposit a week for me at SDO and while it is not it's highest trading week, it does trade pretty well as compared to another pretty good week that I also own.