Ended up doing a bit more to it in the end. I extended the shaft by maybe 120% and threw on a knob matching the ones on my sequential shifter and handbrake. Between the extra weight of the knob and the extra leverage in the shaft, it ended up pretty floppy. The easy remedial things to do were to drill out the innards of the knob to make it lighter and beef up the lateral movement springs. The hard part was putting the upper section back together after dealing with upping the forward/backward tension. Even at the stock tension the thing "exploded" when I opened it up. For a sound dampener and neaten-er-upper I added a rubber cv joint boot. Really quite happy with the feel now.
Crappy quality photo of:
Knob looks disproportionately large in the photo.