@win555 It is good to research but you are overthinking this with doomsday hyperbole for both HGVC and MVC. Risk/reward. Your argument is like a financial pundit saying, "Don't invest in the stock market, you will lose money." I will remind you that the stock market is full of potholes and trader's who's best interest is to make a profit over the individual investor.
Pick a property, then analyze it for each system. Then you will have an answer as to whether this is right for your situation.
If you buy and don't like how the trading situation is evolving. Sell or give it away. Buy where you want to own. Add points for < $10k and stay at newer properties. IMHO...the risk is not that great. It's not like buying a house - we are talking about only $10k - $20k. I can still use or rent out in my timeshare. Can't say the same about stocks. If this risk is too great for your situation then you should not buy timeshares.
yes, I think this is what it comes down to: whether the risk is worth the reward. I don't know that yet.
Stocks are a different thing. I like staying invested in the stock market with Vanguard index funds. I feel the risk/reward is worth it.