I don't see what's wrong with preorder tiers, provided they end up being a good deal. Most of the times they have much better bonuses than games without it. Bioshock Infinite ended up having TF2 items, a copy of Bioshock and a copy of Xcom: Enemy Unknown, plus the pretty meh Industrial Revolution pack but it was overall a good deal.
In Deus Ex case it seems like a crappy deal, because you have to choose between bonuses( instead of getting them all), and there's the idiotic "play 4 days early" thing.
In Deus Ex case it seems like a crappy deal, because you have to choose between bonuses( instead of getting them all), and there's the idiotic "play 4 days early" thing.