I would definitely like to see Valin developed as a character. As you stated, there is a lot of potential for both him and Jysella. Right now they're kinda like the jedi's version of "those two guys" who are in the background of a lot of significant events. It would be cool to see him and others (Jysella, Doran, Seha, ect). I don't want to see an Allston group book with them though. I want to see more jedi doing jedi stuff. I want to see Valin go on a mission that tests him, and maybe his apprentice or sidekick. More "Scourge" less "X-wing". Don't get me wrong, I love the X-wing books, and want to see more...but I also want more of jedi set outside of the galaxy altering events we usually see them in. I want to see jedi be jedi.