Finally had a chance to watch the video and here's more or less some more info on the game system itself.
The 7th platoon consists of 2 tanks (named Edelweiss and Shamrock) and 10 soldiers at the core. 50 characters to include into the platoon, so essentially 40 reserve soldiers as well. It appears that you can add atleast 22 members total in certain battle scenarios (1 tank + 3 members on the platoon list with a central box indicating 18 more soldiers can be added to the platoon list).
Points are earned post-battle and can be distributed to your platoon in any manner you see fit. Points are distributed to unit type (sniper unit, anti-tank unit, etc) so theoretically you can level up the bejeesus out of one particular unit type and have the remaining units be very weak.
All characters have personality traits, as well as "potentials" which are activated when certain conditions are met on the battlefield. I believe these are revealed as the character's respective units level up.
Character traits include: Sandstorm allergies, physically weak, hatred towards imperial citizens, etc.
Potentials include: Double damage to tanks, leadership, hymn/song of peace, etc
Breakdown of known trait/potentials by character
Alicia:
田舎育ち - raised in the countryside (while standing on dirt, concentration increases and shooting ability goes up)
世話好き - enjoys taking care of people
不可避射撃 - non-dodgeable shot
Largo
自然児 - somewhat uncivilized (when standing on pavement, becomes emotionally stressed and defense goes down)
救急アップ - improved first aid
仲間思い -　group/companion affection
戦車の天敵 - tank predator/natural enemy of tank
戦車二重ダメージ - double damage to tanks
Rosie
砂塵アレルギー - sandstorm allergies (will gradually lose HP while fighting during sandstorms)
遮蔽射撃 - hidden assault
姉御肌- bossy disposition
地雷不発 - misfiring mine
不可避射撃 - non-dodgeable shot
平和の歌 - Sony/Hymn of Peace
Yeady(sp?)
リーダーシップ - leadership
Taris
女好き - likes women/womanizer/lesbian (I think this is a female character but it's hard to tell)
Karos
金属好き - metal fetish
寂しがり屋 - lonely/isolated
Homer
潔癖病 - fanatical
貧弱な体 - physically weak
寂しがり屋 - lonely/isolated
Oscar
草原育ち - raised in the plains
帝国人きらい - hatred towards Imperial citizen
夜目 - night vision
Unknown
気分屋 - acts on emotions
And finally, tanks can be upgraded with an emphasis on offense or defense (or a balance of both probably) and the design of the tanks will change according to the upgrades completed on them.
Some translations are awkward, and I apologize. I didn't want to spend all night finding the best translations, but I think these will convey the meanings relatively well.
Cheers.
edit: PV of VotB from the Ryu ga Gotoku Kenzan!/Valkyrie of the Battlefield preview DVD that was released not too long ago (not available on PSN):
http://youtube.com/watch?v=OKbx6R6IL8g
