Don't waste time on this writing as it's only about how we built our portfolio over several years amid all the "supposed great deals." A bad timeshare purchase can be a heavy near-forever burden.
Incidentally, our initial buy was 3 Newport Coast weeks in 2006 (gold, plat, & plat Jul 4th fixed week). Over the years, 13 additional weeks and some points were purchased - mostly resale and platinum weeks. We are Chairman's level, and our large family uses all of our Marriott participations.
Now, it's pretty easy to get buried in the weeds with bundles, discounts, MF's, etc. and overlook "ones individual and specific best use/need prospect at a fair price." It is too easy for me to be driven by a bargain resale on eBay, a bundle, a salesperson's deal, etc. - good or bad.
So in 2018, we took a different approach to rounding out our portfolio and just went for what we perceived as "a fair value over time to meet our needs, what we would use, easy to rent, quality resort, accessible by car, easy to recover our investment upon resale, etc." This was not intended to be perfect, but we wanted something solid. We bought 6 resale OceanWatch, platinum weeks, oceanside view in the resale market over a 4-year period, a total of about $63k. Because we have annual reunions, this has been one of our better buys.
Another thought - I purchased 6 resale Platinum OceanWatch oceanside weeks for $63,000. That $63,000 in a points purchase would not get enough points to get one of these weeks each year.