Guilds that raid 2 days per week and do hardmodes exist. But the problem is, they require both skill and strict discipline, and players with both those assets are rare.
No.But would it not be better to have 3 really good 2-day raiders to juggle than 2 lesser capable 3-4 day raiders?
Because a) with an extra 1-2 days to practice, those lesser capable raiders can outperform the more capable raiders, even if they're slower to learn.
And b) the amount of juggling required to manage 3 2-day raiders in a 3-day roster will drive any officer insane. He'd have to balance farm attendance against progress against tank/healer/ranged/melee balance, and for 10m guilds, take into account availability of raidbuffs. While people come to him with special requests for days off (if he's lucky and they don't just sign up and stay away without informing), holiday breaks and wow-breaks.
Honestly, consistent discipline and commitment are more important than skill. Skill can be learned, discipline and commitment can only deteriorate.I think the leaders of guilds should rethink their recruitment strategy, if they want to get the people with the skill needed.