The 2.0L uses a separate pump and coolant system for the liquid to air intercooler. I think it also handles the liquid cooled throttle body system as well but not 100% easy to trace, so that could be a separate system as well.That is something you could do I suppose.
We will most likely focus on the heat exchanger first, and the associated piping to the intercooler. The next thing is an intake that can significantly reduce temperatures and make good power. Both of those things together will lower the initial entry temperatures to the intercooler. We'll probably focus on those items first.
I also want to attempt altering how the pump works and when it's actuating to change the cooling profiles. If the hardware can handle this we could affect performance this way as well.
There is then another coolant system for the 48V hybrid battery, and then the conventional engine cooling system. So at least 3 loops!
The easiest quick fix might be methanol injection to get temps down or go similar to the Dodge Demon and use the super-cooler setup they do to make use of the AC system to super-cool the L2A fluid loop. These setups are also being used by a lot of the Hemi supercharged guys with good success.
And remember it's a heavy Jeep and not a sports car - so having some extra low/mid range grunt is what matters. This is not a vehicle that you are full throttle in for long as it quickly becomes sketchy above 90mph or so.