For me consistent patchcircle with down-times in between are great.

New Patch -> play new content for around 4-6 weeks
down time -> play other games, work on some longer achievements in ff14 for 4-6 weeks
New Patch -> hardcore grind ff14 again

Im doing not all content thats available (no pvp and no savage for example) but i still feel to have enough to do.
I have everything job at 70; im collecting mounts and minions, working casually on some achievements etc.

If ppl have only a special part of the game they are playing, they have to accept, that there is not enough content (FOR THEM) to do for a whole patch circle.
And ppl that have more time on there hands then the average player need to realise that too.