We have a lot of displeased with the game topics already. If people can suggest something they'd like to see it would be more constructive and valuable feedback. You'll find it's not easy to please everyone though as other people criticise your idea the way you criticise S-E. Coming up with sustainable content ideas under realistic technical and budgetary conditions that covers a wide spectrum of tastes isn't an easy job.

Making pve content stay fun after several playthroughs is especially hard. Everything in life wanes. If it were possible to have sex for 8 hours a day, people would get tired of that and say that sex is boring too. Part of what makes it special is that you're not doing it all the time. MMOs have a very hard task of staying engaging for many hours per week across many years.

They could implement some kind of infinite grind system just to keep you busy for more hours but then people with less time to play will feel left behind. If you don't want to farm mounts, cards, gil, pvp, etc between patches then maybe just take little breaks, a week off here and there, and the content may feel more engaging when you return.