Voltron Skins & Possible Champions

Ok, so I was thinking because I've seen some fanart that Rakan would be good character for Lance, he is literally called 'Rakan the Charmer' & has a tail & ears so we can just have them look like the blue lion's tail & ears. But not only Lance, I saw Xayah, one of my favorite champions, as Keith which suits his mysterious personality & would somewhat fit in with a potential the Blade of Marmora. Also since Xyah also has ears they could be designed as galra ears or the red lion's mechanical ears. I still do not know who Pidge, Hunk, Shiro, & maybe Allura, would be but please send some suggestions or let me know if this is a good idea or not.