I see it is quite common, but I will say it again:

Ability to use miles for standard awards - and not only being able to use them, but the fact that the airlines basically can give no information as to how many seats are allocated and so forth. I suspect that airlines often allocate NO seats for flights they think they will sell out and only release them later at their discretion. Because they divulge no information whatsoever as to how many seats were available, we have no way of knowing.

Considering that they sell the miles for a definate profit - they should at least be straightforward in how they allocate award seats and commit to having a minimum number of award seats allocated for every flight. If I request a flight they should tell me that, for example, "10 seats were allocated and 8 are taken" or "10 were allocated and all are taken." To most people, charging twice the going rate of miles for lifting capacity controls when the system for these capacity controls is a big mystery is quite deceptive.