Not much really to say, I like the macho man La Reina skin, and think that costumes with a Wild West theme could be really cool.
Some suggestions:
Forsburn: (gun powder clouds, Bowie knife, looks like an outlaw)
Clairen: (cowgirl with a Calvary sword)
Steampunk Galvan
Slade: (go from pirate to cowboy theme)
Fleet: (give her arrows more a brass ring sound, cowgirl)
Kragg: (Cowboy, rock and pillar are hey bales)
La Reina: (I just like La Reina I would always just appreciate more skins for her, the ones she has now are great but just for the future)
There are probably better ideas than what I gave but I think an event and premium skins based on the Wild West could bring in a new fun style of skins.
Wait I just realized give La Reina like a saloon chain