Currently the only ones available are those that come with using the corresponding summoner icons from the ultimate skins, otherwise everyone has the same boring banner. If we own the ultimate skin we should be able to use the banner without equipping the corresponding icon. Also, you're selling a ton of summoner icons; you might as well put some banners in the shop.
i had an idea where once you get to champ mastery 5 with a champion you get a banner of them to show off to everybody your favorite champ
Profile Banners as a Mastery reward!!!!
That, and I'd love to be able to swap banners. So that way I get to show off my Pentakill or Twisted Fate Summoner Icon, and still get to see DJ Sona's sexiness on my profile.
OOOH! They should make achievement banners!
Initially in the summoner profile of the client there used to be an 'Achievement' tab. It was greyed out and no usage. Then they came out with the Item sets which replaced the achievement tab.
Honestly it'd be pretty sick to get free banners for multikill efforts. Why free? Because you actually have to work to get that penta! >_>
You can't just buy a pentakill banner, ya gotta earn it!
Unless ya know. Dem teammates of yours steal it. :T
Ezreal banner woo
A Lulu banner...it would be fun, playful, and yet a stern reminder to every Katarina main, silently saying "don't make me go Whimsy on you!"
We could also make custom banners for like ranked teams I guess.
This would be kind of the most awesome option ever for the next tier of mastery rewards. Icon of the champ is an issue bc it lets the other team see it and causes a psychological influence on the game (or whatever reason we don't have mastery rewards the enemy team sees). However, the banner is just when you're on the profile or other pages that aren't shown in the game, so banner for tier six or ten or whatever mastery would be a legit option and an amazing addition. Plus they could do like team ones for rp and stuff if people want those.
Upvote for profile bannersssss 
Miss Fortune banner pls.
Nocturne banner for me!
Dat Jayce banner tho
