The 30 collectible BND sets should definitely give us a choice pack. Considering that we can't do anything with BND cards other than use them on our team, we should get at least some kind of a choice and a chance to avoid a duplicate. I don't know why EA hasn't learned that BND and random is usually not a good combination. And we should also be allowed to do something with a duplicate BND card other than quick sell it for 0 coins.
It would be nice if the 30 collectible untradeable and tradeable sets also gave us a choice pack, but you only want to avoid a duplicate if you are going to use the card from the 30 collectible set in your team. If you complete a 30 collectible set in order to build an MSP, then it doesn't matter if you get a duplicate. And if you want a choice pack, you can trade in 3 lower overall cards instead of 30 collectibles. It would be nice to get a choice pack from all of the 30 collectible sets, but I want to emphasize that BND is a special case and the BND set should definitely give us a choice pack.
Yes, a choice pack would be a guaranteed pack at the start of the event when only a few cards have been released for each overall, but so what. That is already the case with the 3 lower overall cards to a higher overall card sets, and I don't see it being a problem with the 30 collectible sets.
Lastly I want to add that we should be allowed to get cards of all overalls through event sets. I mean for example in the Draft event we can get 91, 93 and 95 overall players through sets, but there are also 92 and 94 overall cards that are only available in packs. We should be allowed to get 92 and 94 overall Draft cards through sets as well. And the same applies to all other events that have used or will use the same format.