Since Happ can make this possible (and sell a boat load of them at a reasonable price), why don't they? Oh well.
You answered your own question here:
The catch was of course that it would cost $50k.
Just to make back their investment, they need to sell 5000 of those at ten bucks a pop. But, it costs more to store the things, add 'em to the catalog, process all the orders, etc.- so add another couple thou for the overhead- they would break even at about the 7000 stick mark. But nobody wants to just break even- To make it worth their while, they would have to anticipate selling lots more than 7000, so call it 10,000 handles they would need to believe they could sell, before they would consider going into production on these. Since they sell three 4-way sticks (Original Pac, Reunion Pac, and the Ultimate is still available in a dedicated 4-way), Happ probably doesn't see 10,000 replacement handles for one base, just to satisfy the MAME crowd.
Wow, I took that a lot further than I intended to.

Smartass comments aside, Good luck with the soldering- It should work fine, I've seen it done on another Wico with the same problem, and it still played fine. I'ts what I would have done if you had gone for the trade!
