Look I don't agree with Reynolds at Lock, my idea would be to move Marsters to lock and Reynolds to center. A 5/8 to Center is not a big change and with the Running game Reynolds has he would fit in there.
That being said, lets look at him at lock:
Pro:
tough defense, good running game, can pass.
Con:
Not big enough to stand the wriggers of being a forward. Isn't even in the front row.
If we were South Sydney, Cronulla or had a similar massive forward pack I could see Reynolds be a lock in that environment. Perhaps only in the last 40 of the game, but I could see it. We don't. Reynolds would really have to bulk up and that ain't happening.
Perhaps after 2 seasons, he could transfer to lock, like how John Sutton did the move or how Chris Lawrence made the move with us. But I am not seeing any of this happening or being a good idea. Were not paying him 750K to be a crappy forward.
As a center he could excel. I think his strengths would play well to the position (defense, grit, good running game) and it would match his weaknesses (less passing). Lock, forget it. While he could play there for 20 minutes if we were Dominant, were no where near dominant