For me the only positions we could really improve are wing and centre. I agree Logan should have the back up hookers jersey he didn't let anyone down although I still think Micky for full 80 will be the right option in the big games unless Tomkins improves drastically.
I'd only want a centre if a good quality strike centre became available otherwise we will be fine with Thornley and Gelling with Gildart pushing through in the next few years hopefully.
Wing for me is still the spot we can improve easily. I understand Burgess and Manfredi are highly rated but its a risk going into the year with two youngsters with less than a handful of appearances between them. I wouldn't mind a stop gap signing. Plus it wouldn't surprise me to seethe NRL clubs sniffing around Josh sooner rather than later especially if e goes well in the WC.