Inland shifter ???

that is the "stick in a bucket of cooked Quaker Oatmeal" shifter. I am hoping for input that will be a substantial improvement. might be asking too much LOL wink
So a couple of questions as I understand they are not much fun to rebuild.
1. How much improvement can one expect to see from a likely never rebuilt unit? (IT'S SLOPPY)
2. I believe I read somewhere about using a Hurst shifter mechanism & linkage with the Inland stick for stock appearance. Brewers offers a kit, BUT see # 4 below
3. I see Brewers has the inland mechanism rebuilt and in stock. From what I have read the most difficult part is rethreading the reverse lockout cable up through the shifter and attaching to both ends. any input ??
4.They also offer a Hurst inland conversion which is out of stock. It looks more like a make believe factory hurst mechanism without the stops and uses the inland rods which sounds a bit cheesy shruggy
5. Ideally, I'd like to replace the shifter mechanism and rods but retain the stick for appearance.
Which of the above will give the most improvement ?

Any other options/sources?

Any input on the above is much appreciated
TIA beer