It really doesn't matter in this day and age...
They play sides now so the halves don't play those traditional roles anymore.
This, for the most part. I get tired of telling people the same thing. That said, I have a suspicion that we might play more 1st/2nd receiver next year, rather than primarily left/right (there are still one or two teams that do this). That's based on RTS replacing Tomkins - the idea being to get our best ball player and most dangerous runner (Johnson) into that 'final pass/play' position, and RTS to play a more traditional fullback role. Let's face it, much of that shape in our '14/'15 attack has been provided by the Tomkins sweep - Johnson usually doesn't have much to do in that move currently, TL (or Lolohea) could do the easier part. Lolohea could have been the 2nd receiver in that move, but didn't look comfortable at all doing it this season from fullback.
Only available halves in the market atm that I'm aware of are Lui and John
We have Leuluai, Lolohea and SJ tied up for next year
Then theres Lino.
+ Mitch Cornish (and Te Maire Martin) - I'd take him over most other options, but I think he'll end up at Manly (or maybe the Titans, if they wise up).
Not Robert Lui. Decent player, but just no (multiple charges and convictions for violence/domestic violence).