Here is a full list of people that have shown interest, their PSNs (if publicly disclosed in this Thread or the official PSN name thread), country (and estimated timezone), availability of Map Packs (1 being Omega dawn), Known to not have headset, and VGChartz username (plus link).
Disclosed PSN: Country: Map Pack? Headset VGChartz Name:
Bowties Canada (EDT) Dogs Rule
canadia99 Canada (EDT) skip
Flow-C Brazil(EDT) Flow
* N/A USA (CDT) makingmusic476
idontrockirap UK(BST) 1 ameratsu
djchuy USA(N/A) 1 Mirson
* N/A USA(N/A) iclim4
ecurbj USA(EST) ecurbj
dawve30 UK(BST) dawve24
jipmg USA(EDT) 1 leo-j
Schnacky USA(EDT) ssj12
ChronoTJM USA(PDT) ChronotriggerJM
WoLoCo USA(PDT) wenlan
Munkeh111 UK(BST) 1 Munkeh111
SamuelRS UK(BST) No? SamuelRSmith
BradyBunch USA(EDT) dgm6780
PrincePale USA(N/A) 1 PDF
Lone_Canis_Lupus USA(N/A) Lone_Canis_Lupus
Yubitme USA(EDT) yubitme
* N/A USA(N/A) SlumsofOhio
* N/A USA(N/A) SHADYVILLEQUEENSNY
SP3NCE1325 USA(N/A) xstonexcold316x
Robmate Australia WhiteDevil
ckmlb USA(N/A) ckmlb
* N/A Australia finalsquall
Scruff7 UK(BST) Scruff7
Sorry for the format! It was well done in OpenOffice, but the tabs did not survive the copy pasting.