I mean, maybe ASA and Toonami have unfairly skewed my perception, but since like 99% of anime openings are in the exact same style of female fronted j-rock or j-pop or whatever... I'm so fucking sick of that shit.
Yes I know there are exceptions, even shown on AS themselves... Cowboy Bebop, Fullmetal Alchemist, Death Note, Samurai Champloo off the top of my head... Trigun's is a British / American variety of rock that's right up my fucking alley... but as far as I know, AS never played that opening. Only know about it from watching on youtube.