It's probably unfair to view this so narrowly, but it's interesting when George Lucas, Ridley Scott and George Miller come to mind in regards to returning to classic franchises, only Miller has been able to succeed in not only meeting the level of his previous work, but even surpassing it.
Granted, the Thomas Brothers are only writers, not directors, but it would be interesting if they took a stab at writing a new Predator 3, how would they fair, and could they replicate the same quality as the first (and slowly the second) has been praised with.
We know the brothers already had a Predator 3 story idea in mind and a half-hearted offer to direct, a story that would seemingly revolve around the flintlock pistol. So my dream is that first draft was written years ago and is still begging to be made.