I like the boost freeze idea. I commute to Redhook/Brooklyn where there are always too many bikes and all the stations are near full. I generally need to park closer to Gowanus or Carroll Gardens to retain my boost points. Redhook is is desperate need of a promotional program to get bikes moved out of the neighborhood.
I don't have an issue parking one or two stations away from my destination but parking in a different neighborhood and having to walk for 20+ minutes really defeats the purpose of CitiBike.
Maybe there is no loss of the boost points status once your monthly points reach a certain level (200), which shows you are trying to make a positive impact overall.