Yeah it seems like they're using actually attainable challenges now and I unlocked a lot of them last night. Think I'm 4 in the event and almost level 10 in the BP.I'm actually progressing fairly well. I think I'm Level 5 in the Fiesta Event and Level 15 in the BP.
But for the record, I don't go out of my way to do the annoying challenges. Use the swaps, or don't and keep complaining