Like an unofficial alliance, or allies we purchase? We've been asking for support for an unofficial alliance for ages. Hopefully they'll add that... If you mean allies we buy...allies come and go, I don't think that would be as great as the other idea.
Oh yeah, I'd totally love to see alliances in a certain color and enemies in red and non-alliance/non-enemy clans in a 3rd color. Haha I'm hoping if enough people want it, ata will see the need...Especially if it's just cosmetic and doesn't affect gameplay. No sending resources or reinforcements...though I'd totally love to be able to send resources to alliance clans, lol. But I do see the arguments against that and know it's not likely to get past player voting if you can send resources to alliance clans...if that ever comes to a vote.
I would still love to see my alliances in a different colour lines esp if you are going to create something more for all alliances.