Latest Tweet discussion
In the newest tweet, we can see that we are able to have different "packs" active probably pertaining to deco packs. Which could mean certain deco packs do need to be unlocked before one can use their blocks and so on. Currently, there seems to be a max of 5.
Oh and what is this:
Also I went back to check the open beta trailer for more clues and found this
Seems like there are some bonuses or limitation in traps