This staff has shown an ability to move players when it sees fit. Brackens was moved from safety to nickelback, Mills came in as a nickelback and moved to WILL linebacker. Knott was a safety (high school quarterback) who they moved to WILL linebacker. Miller moved from WILL to MIKE, Meyers move from DE to DT, and Darius White moved from linebacker to to DE.
In saying all that, I don't picture either of those guys moving to the defensive line. The line should have some good depth next with Ayeni and Luna being back, a couple JUCOs coming in, and younger guys improving more.
On top of that I firmly believe Meeks will be an all-conference guy for us in the future. He's a darn good athlete and I think he'll prove to be pretty fast for his frame. I hope I'm wrong, but I don't picture Seeley as ever being a consistent starter here. He might be a candidate to move to defensive end but I don't see that happening unless there are injuries.