Hello fellow Cody, and welcome to Geekhack. Great choice in box jades (are you me from another dimension?). From what I can gather, the pinks and the jades are the bassiest switches of the box family, which already seem to have amongst the bassiest switches of the modern switches. Navies would definitely not give you the thock you desire, although they're a pleasure to type on. I don't know of any, personally, that are bassier that would be compatible, much less as heavy as you would like, but maybe somebody might.
You could try swapping some sprit springs of an intermediate weighting into regular old jades and see how those work out for you. Personally, I've decided just to use all jades or all navies in all of my boards. I put a navy into the spacebar for my cop keyboard, but I realized even that was unnecessary once I tried filling an old Unitek K-151L with jades. No return issues whatsoever, even with the big ass enter key and giant AT space bar.
I imagine this is more specifically focused on varied weightings though moreso than the past concerns with sluggish return.