[EricH]

Originally Posted by Jedward45

While broaching would be possible for some components, I would ultimately need to use a pin to connect the drive wheel anyways (see pictures)

Not necessarily. There's an old trick that we used back when Skyway wheels were the wheels of choice and didn't have that nice 6-hole pattern available. You build an adapter that goes between the spokes of the wheel and bolts (or otherwise attaches) to your favorite drive method for the wheel

Or you can hex broach the hub of that wheel, use a hex axle straight through, and have a full live-axle setup without the pin being needed at all.

Just because you think you need to have a particular method doesn't mean that that's the only method that will work.