We've signed some great players so far and there's still 3 months until the season starts, some being potentially the best in that position that we've ever had. One of our best performers last year wasn't even heard about until about a quarter of the way in.
Players get injured, drop form, fall out with other clubs etc etc. The team you end the season with normally has at least 5 players you didn't start the season with, so anyone concerned with the make up of the playing squad now is worrying about nothing.
As for dual reg players worsening the situation? We won't have players coming from Hull KR if we've got our own in that position playing well, if we need a half-back, they've got at least 4 who are better than we had last year from them. They can't all play for their parent club so we'll have a top quality half-back from them playing for us most weeks.