5. Bring In A Hollywood A-Lister To Co-Star
I think it's fair to assume that even if the filmmakers go the nostalgia route, they're probably not going to get everyone from the original film back - Jeff Goldblum for one has insisted he won't be in it on several occasions - and so it's best to have an alternate plan in case. What the series needs is what it's lacked in the sequels so far - star power. It needs a Hollywood A-lister to join the ranks and propel the franchise back to its most glorious, glamorous roots. One of the best choices I can think of is Jennifer Lawrence; she's a great actress, is physically appealing to men everywhere, and has also proven herself as a tremendous athlete, what with her work on The Hunger Games, which also involved traipsing around an island. Lawrence could play an older Lex or an entirely new character; as a seasoned young survivalist in the vein of Lara Croft, this could make for some stunning action, and give the film a much-needed boost of energy.