Ya and run 5.13 gears or something stupid and then complain about why you are getting the same fuel economy the new F450's are getting with 4.88. So then you have to spend more money to make your truck a 6 speed. Either way Mike L. is still getting your money. Lockup in first just sounds so much easier. One of those easier said than done deals.
I mean it sounds simple to me. Drill and tap a place that always has positive pressure in the valve body, then drill and tap the spot that has a torque converter lockup line in the valve body then run the 2 steel lines to a 100% duty cycle solenoid. Then you run a couple of wires out of the trans to a switch and presto. Lockup in any gear any time completely by passing the ECM.
I reserve rights to my stupid idea and want millions for it if it can actually work that simple.