I will not be shocked by a RB early.
My personal fave is Dixon, but he might interview like a punk for all I know. Henry is my odds on pick, but I will not be shocked at all if he is already gone by then. He reportedly is an impressive interview in addition to all the athleticism. His pass blocking is probably as big a deal to Pete as his running. As far as his running style, some get so caught up in how he ran behind a great line in Bama that they end up dinging him for his patient style and following his blocks.
Still, I would hate the Henry Pick for one reason, it means more tight end blocking play action football in Seattle's future, when a guy like Dixon who can be explosive in a spread look feels like the direction our offense needs to go.
I know Elliot will be gone by then. The first time I saw Elliot play, the first time I ever saw him run a single play, I was only half paying attention to the game, and he did a couple things that grabbed my attention. Can't even remember the game or opponent, but I paused, rewound, and declared that guy to be an NFL star. I am convinced that he is going to be awesome still.
Under no circumstances do I think Pete is comfortable with C-Mike as his 2.