Because cracker (or some other developer that i can't remember) said it wasn't a planned feature, and it was discovered unexpectedly so they removed it. I could see uses for compression of PCLN (those Sonic boom guns) But it also annoys me because it makes it hard to delete compressed particles D:
They could be used to cause ridiculous amounts of lag, to make it hard to delete things, or to make it difficult to discover how a save works. Not to mention how much they offended my sense of physics...
Can do you know how to make a ball gun? It's like Sonic boom gun but without the QRTZ. It's has to be spawned together. Then launched in the same time.
EDIT: You guys are kinda making useful ideas to go to waste You guys should just make the elements back to normal. I liked EXOT before now i don't. And it ruined most of my ideas for the elements.