Why check someone for skills they don't use? If the only reason you have to not change it is "It's how it's always been done", you have no reason at all.

Drills should be practical in application translating to skills used during games, specifically using drills that can be used to discover instincts and read reaction times. Players numbers are sometimes beautiful to look at and then because of slow reads and slow instincts it negates all the numbers possible productivity.

i agree why a 40 yd dash for a 300 lb lineman? maybe a 20 yarder. they dont need breakaway blasting speed like wrs rbs tes and mobile qbs

The combine is possibly the biggest waste of time in all of sports. Bill Walsh proved the interview and intelligence tests far outweighed the skills competition. Measurables are grossly over rated.

The combine is meant as a tool to educate the teams on the best players available. If the opportunity becomes available to test players ability more accurately arises, as long as it doesn't endanger the player, then it behooves everyone to include. Players can always decline to participate in a drill.