True. But I would submit that a binary yes/no is a *lot* less informative than a specific number. As just a couple of examples, suppose you want to book more than one ticket, or you want to make an educated guess about whether you can wait until tomorrow (not guaranteed of course, but if R9 lots better odds than R1).
No. It's not on KVS, as has been (repeatedly) reported upthread. EF, true, but a much clunkier interface IMO. But if EF stays, agree that this is lower impact than #1.