Your right people will say it's long/boring/slow/grindy but they won't say it's unfair. The long/boring/slow/grindy discourages those that want more instant gratification, right now anyone that doesn't feel lucky enough or have the gil to toss at the slot machine is pushed away. It's got nothing to do with the time or grind.
I don't think I'm the only person that plays less than enough to do AV/CC/Hamlet 10 times a day but would also be more than happy to do them 3 times a day for some guarantee at progress even if it's gonna take me til 3 days before 2.0 to get it done.
Obviously this also plays into what's done in 2.0 and to create still more content that's simply luck of the draw is going to drive people away. I suspect that this thread alone confirms that, and there's at least 20 other "WTF is with the drop rate BS" threads that are filled with people that almost all agree it's busted. This is the one topic that nearly everyone that actively posts on these forums doesn't devolve into children attacking each others ideas, that's gotta tell you something.
This I believe is the answer, though the 300 minute(5 hr) is a little long. Nothing over 3hrs inside, it's been my experience that people tend to start to drift off, or maybe that was just in Dyna/Empy farming/FFXI in general.
Some things shouldn't be highly accessible to most players, but nothing should be locked away because a person doesn't play 24/7.
Shitty players shouldn't be able to access everything because they're on alot and good players shouldn't be barred from said content because they don't play enough. Time spent online shouldn't be a deciding factor, within reason, say 2~3hrs should be enough time to go in and do anything once. Though what we ended up with was a little obnoxious.
Even if the average day is less than 2 hrs, you've nearly everyone that can give 1 day a week where they could run, that's how I did Nyzul, didn't have the time to do 4 tags during the week but I'd be damned if i wasn't going on Saturdays.
But that's the problem, the hardcore(aka lotta time) could go a month to get it while a casual(aka less time) could get lucky and be done in a week. Whether your someone that plays alot or a little the time playing for the same item should be the same, generally speaking. RL time yeah might take you 2 months but me 8 cause I play 1/4 of the amount that you do. It shouldn't be a maybe though.
I'll also mention that I don't know what this casual/hardcore thing is really. At the end of the day there's people logged in 80 hours a week(actively) that are garbage, others that only play 20 that are pimp. Back in the day the hardcore were people that dedicated time to being good, not just spent alot of time playing. Let's not drift to a system where it's all about time spent in world, or do, I can leave myself logged in while I'm away if the req's for a ??? gear become time logged in.
Don't restrict content to people that can play 6hrs a day everyday, . That's broken. 2~3 hour content with a reasonable delay between entries so it can be consistently scheduled for those that only have 1~3 days of >2 hrs to play. Not broken. Spammable content that takes 20 mins and has shit drop rates, fun?
Do make content a nightmare for people that don't put in time to be decent at their job(s). I don't have time to master them all but I'll be damned if I'm not among the best at 1~3 and with that being the case shouldn't I be allowed to do everything.