If you're looking at it from the point of investment potential, the overriding principle is supply and demand. With regard to true vintage MOTU figures, there is a finite number of them in the universe. The higher the interest in them, the more they are acquired, the lower number of them there are available and the higher the price for those remaining goes.
Despite the fact that there may be some protests from loyal MOTU fans, interest in the franchise is relatively low at this point in time -- witness Power-Con being canned recently. That said, Power-Con is now coming back. What I believe is happening on the part of its savvy promoters is that they realize the MOTU film is a possibility. If that happens then interest in the franchise will rise and their wonderful convention will be in the cat-bird seat. Clever, these guys.
Similarly, if the film happens then interest in collecting will rise as well and once again the amount of product in the market place will diminish, prices rising because of supply and demand.
Bottom line? If you're an investor who likes to take chances then imo this is a good time to acquire as much MOTU product as you can, buy a major motion picture studio and greenlight DeVon Franklin's MOTU film project. If you're just a collector it's a good time to acquire while prices are low.