The knight level average of a guild, should be a part of the guild war matching.
#Add new parameters to Guild War matching
silk anchor
frigid fjord
This is already in place, of sorts - matchmaking takes into consideration the Knight levels of Guild Members, and the distribution (ie how many of each level are in the Guild).
It doesn't average it, because you could have a Guild that's split between lots of low level players and a lot of high level players, and the average would be in the 30s/40s, and the system could match against a Guild full of entirely 30s/40s - this would be a rough experience for the 30s/40s Guild and the low level players, and provide no challenge for the high level players. So instead, the system tries to find opponents with a similar Guild composition.
silk anchor
Thats good, if not only take the total lvl of the knights counts. It should be count how many 67-70 knights, 64-66 knights, 60-63 knights and <= 59 at a guild.
normal surge
Well, for guilds that have only players in the 0-30 range, there is also more ranges than that so all matchups stay fair