There is an achievement for doing that now too.

Oh yea, I need to grind 30 wsg marks for my legs QQ. We should team up and see if we can win a few (we all go down, get flag, zerg on way back) or lose on purpose for quick 6 min games. That's about 10 marks per hour.

PS: I wish you could exchange one type of mark for another, or hand in 5 of 1 type for the 314 honour. Because I have 100 AV marks and another 50 in the mail lol.