I think trany coolers are a good idea for summer driving on Pittsburgh hills. As for the oil catch can, I am pretty sure it is a DI engine without the intake port injections to wash the back side of the intake valves. I know low NOACK like Pennzoil Platinum may help reduce the amount of oil fumes that end up going through the PVC and into the intake. But am wondering if a good catch can can significantly reduce the amount of oil that reaches the intake.
One thing I am wondering about is which would be best, shorter OCI such as 5,000 miles, or the recommended 7,500 miles or annually which ever comes first. There is some thought that fresh oil throws off more fumes than old oil and if that is true then more frequent oil changes might increase the over-all amount of oil fumes that the intake gets, compared to running the oil longer before changing.