When SKINR was first announced, I kind of through that one of the first patterns available would be faction logo patterns (Amarr, Caldari, Intaki, Angel Cartel,…). I just thought that was obvious to launch first, especially because we have a whole feature for the factions: factional warfare. Faction logo patterns also fit perfectly into EVE universe as a natural part of it,… unlike skulls that we already have… a couple of versions.
All this time later and we only have a Caldari pattern from the Alliance Tournament, but it’s more like a one time event item with clear purpose of marking that particular Alliance Tournament. (edit: ok…. we have Drifters three stripes)
To expand on the idea, having NPC corporation pattern logos wouldn’t hurt either (Quafe, Lai Dai,…).