I might have missed an explanation, but why doesn't Delta allow us to see the bucket availability? I can understand blocking EF. What I wonder is why not give us a "simple" search option for showing flights that have upgrade instrument or mile upgrade availability. I would think that if Delta extended more tools to allow us to use our miles, we might actually use them.

Yeah, I know, that is asking too much of a company that doesn't even want to provide an award calendar.