ok, but they are pretty much about at the point where you have to radically alter the device, no? I mean the physical layout is optimized for transmission line for that specific topology. Perhaps a dropin footprint equivalent device exists, otherwise adding some daughter card with all the extra trace inductance and noise transmission seems to make it a bad compromise. I would leave the stock unit alone, but that's just me.
You can never completely 100% remove jitter in ANY clocked system, anyway.