1). It has cacti, a very essential ingredient to many potions and a great way to get early gear.
2)Sand. Its great as it makes bottles. How would you craft that potion without a bottle?
3)Shards. You know that dao of pow you just crafted? No desert, no dao of pow!
4) You need many...
I suppose, but only fishing was added. I would consider the the summon items ect to be "the other half". However, if you want to be precise, i would agree with 3/4's :)
EDIT: I know not only fishing was added, but i meant fishing related :P
If you're waiting, you'll be waiting a while.... just sayin'.
Terraria 1.2.4 on PC released on 8th May 2014.
HALF of 1.2.4 on console released December 2015...
A 1 and a half year difference, and not even the full update yet...
So yeah, it could take over a year, but you never know ¯\_(ツ)_/¯