The man wants MORE caster. How about this idea?

No.

Toe is relative to driving surface (ground/horizontal).
Individual toe should be measured at spindle height. This eliminates any difference in camber from side to side.

If you measure behind the wheel, then it's +1/8 or 1/4 or 0 or you'll be pigeon toed. Lol
No.

Toe is relative to driving surface (ground/horizontal).

This is what I was suggesting with big caster .
Toe in will kinda be arbitrary, depending on where on the tire you measure the toe .
1/2 way up the wheel, -
90* from a kingpin, at the spindle, or the tire contact area.

Just promoting thought .
Thnx