Personally, I might go for the 15 or 20 destinations just for the points. 25 years of Mosaic is fairly useless to me, considering that of all the airlines that I've held elite status with, JetBlue Mosaic has to be the program where I've been treated the absolute worst as an "elite" customer by any airline. Even then, I'm not going to go out of my way to plan to reach 15 or 25. I'll only stretch for it if I get close to it organically.
Originally Posted by
skydelt
I guess the bigger question is if your 25 years of Mosaic will transfer to MileagePlus in 5 years
Since it's Mosaic 1, it would likely become United Premier Silver, which would make it Even More Useless™