Dunno if anybody has done this but here goes:
Today I got a funny idea (I actually had this idea a while back but in a different form).
How does it feel to add a metal blade (like the ones on leaf switches) to the switches on the TP-MA (pcb of the Sanwa JLF-TP-8Y joystick)? I did just that and let me tell you it is amazing how it performs now, superquick activation of the switches (maybe hard to see in the video but you can tilt the lever less then half of the way than you do normally untill activation). I took some pics + recorded a video for you guys. Let me know what you think:
Video!!! (Right is normal, left is the modified lever)