OH Idk I can't stand the idea of them being rivals, they're just too awesome to hate each other. It's like Olivier and Izumi, you know? Both badasses charatcers that ended up being friends. I think Lin would fit this friendship *-* Oh wait, now imagine the three of them together? Goshh why haven't I thought about that before? YEAAAH they are freakin' epic!
Oh my god. I just had a thought. Only put Lin, Izumi, and Olivier in Fort Briggs to defend the border from an entire Drachman army, and all three would win. Olivier inspires her troops to fight harder, and Lin and Izumi would be the hard hitters for the group.