Respectfully, I don't think you've given the OP full consideration. In TT - a safety adds exactly 10 seconds to your total time. In RP, each stage has a varying RP penalty for 10 additional seconds. A proposal along the lines of Bud's thinking could minimize the disparity. On a long stage where the fastest shooter is at 28 seconds and the slowest at 60 seconds, the RP jump might be 8 or 10 in a 100 person match. On the dump stage where the times range from 11 seconds to 25 seconds, the RP penalty could jump into the 90s. So I get an 8 RP penalty and you get a 90 RP penalty for the same infraction? That's how it's played as is. There may not be a way to totally eliminate the discrepancy, but there certainly is a way to narrow the gap.
My, how refreshing. An original thought! Thanks, Bud.
CR