Not as lucrative as hoped, they neglected to include most of the UI files.
On the other hand, the exe strings have been fascinating!
Techs:
Thunder:
Zondiel (may be a corruption/reinterpretation of Zodial? who knows!)
Wind: (yeah, they have them now)
Zan
Gizan
Razan
Sazan
Sezan
Weapons:
Wand (confirmed YET AGAIN)
Tmachinegun (oh yes)
Subclasses:
EquipEnableHunter
EquipEnableRanger
EquipEnableForce
EquipEnableFighter
EquipEnableGunner
EquipEnableTecher
Areas: (these are probably not helpful!)
AreaID_MyRoom
AreaID_Playground (note: this was for test areas before, if I'm not mistaken!)
AreaID_SharedServerLobby (could be like PSO1's lobbies, or could be a place for people on different ships to interact)
AreaID_Lobby
AreaID_Esthe (I don't know)
AreaID_Skit (skits are tutorials)
AreaID_Campship
AreaID_None (probably just in case of errors)
AreaID_DungeonStart
AreaID_DebugZone
Areas (from debugging text)
0007: ShaderPlayground
0009: Playground
0010: BlueBack (it sounds like, get this, it's a blank blue background)
0101: TestCity (lobby area for testing)
0150: CampShip
0190: MyRoom (not sure why this one's here, 1000-1001 is MyRoom)
021*: NewUrban/Urban (it's called both)
0290: Stadium (new areas suggest that this is in fact a boss arena)
031*: Forest
032*: IceWall
033*: Ruin (THIS IS A NEW AREA)
039*: DarkFalzSeal (yes, this means it's on Naberius)
041*: Desert (this area appears to have been worked on since alpha 1, it has a FirstHalf and LastHalf now)
042*: Bord (this is actually "tunnel"; see note on Desert)
0490: DesertBoss (NEW)
051*: Cave
052*: DragonLand (see desert)
0590: DragonLandBoss (NEW)
090*: RareMap (no idea, but sounds like it could be interesting!)
100*: MyRoom
Enemies:
SoldierAnt
SoldierAntElite
QueenAnt
Snail
Spider
SoldierAnt2
SoldierAnt3
SoldierAnt4
SoldierAnt5
SoldierAnt6
AntEgg
NativeBeast
NativeBeastThrower
FishShield
FishShieldReverse
FloatageFishA
FloatageFishB
FloatageFishTeam
HologramRobot
ZombieRobot
ZombieRobotUpper
ZombieRobotLower
ZombieRobotCore
ZombieRobotB
ZombieRobotTeam
PterosaurA
WolfA
WolfB
WolfTeam
WolfSnowA
WolfSnowB
WolfSnowTeam
ArmadilloA
BigBeastA
YetiA
YetiB
YetiTeam
RagRappyA
RagRappyB
Rappy
Mammoth
DragonRaptor
DragonRizardmanA
DragonRizardmanB
DragonRizardmanC
DragonRizardmanTeam
DragonRizardmanUniq
DragonWolfA
DragonWolfB
DragonBeast
DragonWorm
Doodlebug
DoodlebugNeedle
DoodlebugTeam
Locust
MimicA
MimicB
MimicC
AntReaper
FishBigBeastA
FishBigBeastB
TransformMechaA
BossMechaA
BossMechaMine
BossUrban
DragonMagma
DragonMagmaUniq
DragonCrystal
DragonCrystalUniq
PantherA
PantherB
PantherSnowA
PantherSnowB
PantherTeam
PantherSnowTeam
Canadin
GormaA
GormaB
GormaC
DpHuman
Totoro
Crab
DragonWyvern (note: PSP2 called all of its PSO dragon reskins "wivern", although obviously plenty of other things use that name as well))
Char01_Maskman
CannonRobot
VerificationEnemy (test enemy, nothing to see here)
Will add more if I find it.
EDIT: Textures that were interesting in other builds (but not here):
ui_appearance
ui_maincrop