Berry has significantly better scoring potential and job security. His durability does undermine both those though. Berry has legitimate 110+ potential if his body holds up and he gets a genuine crack at it. Seriously underrated player. Again though, his body has been shocking to him so far and really he's on that list of guys you can't trust at this point. He's cheap enough to take the punt though but I probably wouldn't be structuring to get him, if you've got the cash to get him, great, if not, you can probably get similar cash generation. I don't expect him to blow things apart this year after a couple of major injuries, not at the moment at least!
Caldwell a lot less proven, no idea with him but he's got some real SC assets. Role needs to be right though.
Don't think they have to worry about that. Even assuming that Daicos and SP are replacing Maynard and Crisp you'd still have Moore and Howe who are elite kicks, Quaynor who is a good run and carry and solid kick and then probably be picking from the likes of Ruscoe and Bianco who are also excellent kicks.
Basically you've got Roughy who's not a great kick and he's smart enough to know that and get it to the guys who are. This is of course until 3/4 of that list is out injured again