I've always thought that the Gold Coast had plenty of potential but of course they've never reached said potential which is unfortunate.
I think they need an NRL standard coach who has actually won a comp before or gone close, someone that players really want to play for and know they'll improve under. Mix that in with a big star player that can lead a team and get the community excited and once again that star player should be someone that most guys in the NRL want to play alongside. I feel like they haven't had one of these since Jarryd Hayne and he couldn't really deliver on the field.
I think they need more pick ups like Liu as well, guys who come from successful teams that have won comps and have plenty of big game experience. Unfortunately for the Titans they only really have Liu, Tino and Wallace who fit this criteria, next year they'll get Foran but he's 32 years old and probably only has another year or two left in the NRL.
Looking at the Dolphins they apparently want to sign Cameron Munster and they got Wayne Bennett also, those would've been two perfect signings for the Gold Coast Titans.