I'm leading one of those 3/10 guilds. We're on an RP server, so the players aren't the best, but we keep it going.
Frankly, I'm okay with mythic raids being hard. What I'm not okay with is them being solely focused around top performing teams for the entirety of the tier. I have parents and shift workers on mine, we just can't afford the same throughput. The AP requirements are just part of that.
I think it's not the main problem though. It's mid expansion tiers in general. They feel pointless. My raid fought their way through end of tier bosses like Blackfuse and Xul'horac, but stuff like Cenarius or Hans&Franz got us blocked no matter how hard we try (and we do). We're not slowly progressing upwards, we're roadblocked until the next tier comes around.
I don't get why raids like ours are damned to grind to a halt at points like these. I hate that the tiers since Cataclysm are tuned around split pushing elitists. I couldn't care less about the race, about hardcore progression guilds and their 4 weeks of fun a year. I care about the people in my raid I've stuck with for 8 years, the 2000~ guilds that are senselessly stuck at this point because of tuning.
To know that there is a good chance this tier is over for a good chunk of them and even us at 3/10m until Tomb comes out is incredibly disheartening. That's just not what a progression curve is supposed to look like.