Unless the Thomas Brothers do not want project control over their reclaimed license, I think just bumping some slightly higher percent of proceeds as a solution is just a gross oversimplification. And who says the Brothers will settle on a number equating to "slight"?
Also a lawsuit like this can create bad blood on both sides, and when that's your launching pad, all it takes is Disney saying the Thomas Brothers want too much money and control, the Brothers saying Disney is low-balling, and then I can 100% see Disney playing hardball, stop negotiating and just putting the franchise on ice for a few years. No doomsday scenarios here, just being a realist, especially looking at how Disney has handled other situations like icing out X-Men from Marvel pre acquisition, or the Islands of Adventure debacle. There doesn't seem to be a concern over halting content for fans, if the wait-it-out approach brings the desired result.
I remember reading that Fox's explanation why they canceled the series "Terminator: The Sarah Connor Chronicles" after two seasons while other shows with similar cost & similar ratings survived was because Fox didn't fully own the show. So unless the Thomas Brothers sell Hunter all back to Disney for a one time sum, I think Predator will also be dealing with these type of obstacles.
So with all of this, I rather be prepared for what possibly may come, than not prepared.