Lethal Weapon reboot

It seems Joel Silver is dead serious about this. Will Beal, a former cop, has been hired to write the screenplay. They apparently intend on keeping the R-rated tradition of the classic franchise, but as I've seen one reboot too many, I'm pretty sure there are going to be lots of major changes. For one, Warner Brothers will probably throw in a huge 100-200 million dollars budget, which would be a mistake, since "Lethal Weapon" started out as a small 15 million dollars budget movie in 1987. Also, Silver hasn't really been able to turn in any classics recently, so I'm a little worried he's thinking of tinkering with an old working formula. I suppose all that's left now is to catch news of the casting of the leads. Gibson and Glover had an incredible chemistry and their verbal riffs were the soul of the movie. I'm not saying it can't be done, but sometimes such perfect matches happen once in a blue moon. Who do you think could fill their shoes ?