I don't think her spin in 2 directions would have been recognized as 1 spin featuring both directions under COP.
When I've done this in the past , I figure out their average value per jumping pass and multiply by 7. The tricky question is whether or not MK's 3 loop 2t series counts as a series or as two jumping passes. Obviously, she wouldn't have wasted a jumping pass on a 2t, and if she'd repeated a 3loop w/o doing it in combo/series, it would have been devalued by .2 anyway.
Under current rules, Tara's final 3t-1/2loop-3sal would have been treated as a 3 jump combo: 8.8+ .88 = 9.68
I don't think there was anything wrong with ladies scoring in '98. I think of it as the day the sport became, well, a sport. If those skates had been performed anytime prior, Kwan would have won, but not since.
I think they would have been even after the SP, because Tara's 1.50 advantage from doing a 3f would have been balanced by less GOE on jumps.
It's kind of pointless/unfair to compare spins and steps as skaters basically do what they have to under any system.