The reduced hand size doesnt matter much, but you are drawing the cards and not just placing them in your hand, which has positives and negatives, especially against Orcish Bowmasters
This means that newer players wont have to pick up too many new and difficult strategies as the deck rewards you for doing an action that is integral to both the game and the format
(2004-10-04) If player A controls Pandemonium when a creature enters under player B's control, player A controls the triggered ability even though player B chooses the target and chooses whether to have the creature deal damage, which could be important if multiple abilities controlled by multiple players trigger
You probably think I'm crazy for even suggesting that Hypergenesis could be unbanned, but hear me out
Its worth noting that until Battle for Zendikar, the cheapest Eldrazi the temple could ramp out cost 7 mana (making Eldrazi Temple quite similar to [casthaven]Shrine of the Forsaken Gods[/casthaven]