You didn't touch upon anything beyond your own playstyle preferences. The devs need to consider the majority. People will not run content unless essentially bribed. For instance, very few raiders give a hoot about normal modes. They pick up crafted gear because many just can't be bothered with the easy mode equivalent. Allow them to farm drops whenever they fancy and I guarantee you normal mode Omega is dead content within a month. Why do you think they stuff mounts into practically everything? It keeps people active. The fact DPS queues jumped considerably after they slapped VI materia for "in need" bonus on leveling is a testament to that fact. Furthermore, no tomestone limitation renders crafted gear, non-augmented Omega gear and the 24 gear obsolete. I literally would have no reason to even look at Ivalice more than once since I'll have long gotten enough tomestones for every job I care about. In fact, look at Verity-- the current unrestricted tomestone. How many people at level 70 don't have all their gear at 310? It's been precisely one month and people already have multiple jobs at 310 because there's no limitation. That would occur if Creation were also uncapped, except unlike Verity, it's supposed to maintain relevancy for six months.
No they don't. I've been capped on wolf marks for months. I run PvP because I like it. The only time I cared about Wolf Marks is when I was hunting for glamours. Regardless, you just said one of the factors. People want those exclusive mounts, i.e. an incentive.PvP has uncapped wolf marks and players still farm it for that reason, though PvP is a touchy subject, more so based on how unbalanced it is and how unrefined it plays, PvP still gets plenty attention from the player base. PvP still has many people running it for exclusive items and bragging rights across the board, and PvP also encourages players to try new classes much more effectively than any PvE content. Again no weekly tome system.
That's the point those. It gives players an option to avoid the weekly Omega lock out and gear to the ilvl requirement to enter Savage should they choose. It's stepping stones gear. The 24 man is both a catch up option and an incentive for veterans to gear their alts. As noted above, devoid of that incentive. People wouldn't have a reason to keep running them, which is how Weeping City and Dun Scaith stayed relevant several months after their release.Crafted gear is also touchy, many players myself included think crafted gear should be much more attractive, but it isn't, it's nearly pointless outside of HQ and if it didn't have the ability to be melded as much as it did, the gear would be dead on arrival. Same with 24 man raids, that gear has always been catch up gear with the option to upgrade tome gear.
PotD is successful for its fast and efficient leveling. It would have died long ago had it not become the de facto way to level, especially as a DPS.PotD is successful due to the glaring fact you can run it as many times as you want, get unlimited chests, level up fast because of player drought in dungeons, and earn new rewards. But nothing has a limit on it.