missed opportunity with cellebration event
First, I think some of those challenges are very interesting / have no issues with any of them as being "unfair"... however I think the rewards for doing them are a joke, and with all the content going on right now, its going to be hard to find the time for these at the moment, and given how it isn't permanent content, that's unfortunate.
I think the rewards totally miss the mark. Everything should have a start added to it. Complete one... get a 5 star. If a valiant completes them all... they aren't looking for a 6 star selector, but a 7 star (could have been a RNG of the pool if a selector was too OP).
A shame really. If this came out late last year... I would have done it while things were slower... But as it stands now, its hard to prioritize this content over battlegrounds, WoW, monthly quest, AQ/AW, and everything else going on.