Just some more suggestions for NTSC standard hikes.

MC1- I'd probably make 59"00 the Emperor F barrier and 59"75 the Hero F barrier to beef up the NTSC standards here.

GV1- Emperor F 1'01"50, Hero F 1'03"00 to put it more in line with PAL. The one-minute barrier might work for Myth F but I would personally make it a high 59"xx. Maybe 59"80.

BC1- Looking at the PAL charts, 1'27"00 looks like it was born to be the Emperor F barrier for NTSC players. Hero F isn't terribly weak on NTSC compared to PAL but I'd still bring it a few tenths lower.

CI1- 57"00 for Emperor F works for me. Not sure where I'd put Hero F, probably 58"00 or somewhere else in the low 58" range.

GV2- Wouldn't the one-minute barrier make a badass Emperor F standard? Push the Hero F standard just a little bit lower, maybe to 1'01"40, and it'd look great IMO. Star F here is harder on NTSC than on PAL, not that I have a problem with this!

DP2- Hero F is probably fine already, as it's actually been reached by fewer NTSC players than PAL players. But Emperor F could stand to go way down. 1'25"50 would probably do it, putting me in the high Hero for both PAL and NTSC.

BC2- 1'41"00 needs to be the Emperor F barrier. 1'42"00 would be okay for Hero F even if a bit tough.

MC3- I think I'd make 1'28"50 the new Emp F benchmark and 1'30"00 the Hero F time to beat. The Star F is actually harder on NTSC!

MC4- Emp F can go down to the 1'36"00 barrier, barely putting me in Emperor range. The Hero F is fine and the Star F, once again, is actually harder for NTSC players.