After playing this most recent patch for a bit, I feel like there's still some room for tweaking to make Jason more of a threat for the whole game rather than just in a post-rage state. Here are three changes I believe deserve some thought.
1) The phone fuse box should be able to spawn at any house. Those of us who have been playing since day one know all the possible locations for the fuse box on every map. There are several maps where you can simply look at the cabin layout the second the match starts and determine which house has the fuse box. Having this information almost immediately available is extremely advantageous for counselors. Adding more randomness to the fuse box location means that counselors will have to spend more time looking for it. Add in the extra variance of there being a nonzero chance the first counselor who finds the box doesn't have a walkie-talkie yet, and you've inherently lengthened the game... which is to Jason's advantage.
2) Part distribution needs to be less forgiving. The Jarvis House and Pinehurst maps already do this well to a degree. But when it comes to the original three maps, we all know that parts are always near their respective objectives. It's time to change things up. Imagine a game on Higgins Haven where the fuse box is in Blair's Cove but the fuse itself is in the northernmost house in Evergreen Camp. This is an extreme example, perhaps, but it shows the potential of how such a change could impact game play. Simply put--it needs to take more effort for counselors to repair objectives and this is the simplest way to accomplish that. Experienced teams who know how to split Jason between objectives can have the phone/car repaired in 3-4 minutes on Crystal Lake, Higgins Haven, and Packanack.
3) Thick-skinned should only apply to combat damage. As things currently stand, traps are very weak. Counselors with thick-skinned and medic can tank them with absolutely no consequences. Once upon a time, traps were changed so that they put you in the limping state immediately, but thick-skinned gets around this. It's the same problem with window hopping. Jason can break all the windows in a cluster of houses, but if a counselor has thick-skinned and medic, they can effectively kite between cabins for several minutes--especially if one of them has the long table. Changing thick-skinned to only reduce combat damage eliminates both of these problems but still allows the perk to be useful for counselors who want to get in the mix for the kill, or those who want to antagonize Jason pre-rage so that others can complete objectives.
The best thing about all of these changes is that they all help Jason to some degree, but you don't have to make any change to Jason himself to implement them. I was able to get attention from @wes during the stream about the fuse box change and he seemed to think it was a good idea. Maybe @mattshotcha can help these other suggestions get some traction and see what the powers that be think of them?