SE has more than two options imo.

1. They can leave the droprates as low, and add a "points system" which rewards you for every win. Currencies, company points, etc which could then be traded for items. Like the system they implemented for Garuda, which gives you in advance the possibility to know how much time and effort you will have to invest, and rewards you depending to it.

2. They can make lock-outs and increase the droprates. I'm not sure about lock-outs at this state of the game, since even if i do feel SE has done well in adding content the past two patches, it may not really be enough yet to really have 2-3 days lock-out on dungeons or so.

3. SE can chose to make the content build on eachother, slowing down progression and increasing droprates, meaning : you need to farm an item you get in X to deblock Y, where you can farm an item to get to Z. This honestly is my favorite option, since it actually gives a reason to redo certain already obsolete content, and slows down the progression without blocking ppl out of it for days.

4. They can leave it as it is and add a 10 points achievement for getting 100M out of coffers in dungeons.

The argument about FFXIV being more casual player oriented isn't really something I can confirm. Like already stated before, this system rewards luck, nothing else. And it's not because you're a casual player, that you are automatically lucky. As from my experience in our LS, the players who have IRL responsibilities need to organise their time and make choices on what they chose to do IG, and most of them don't see a reason to spam content X times and hope to be lucky.

Either way, like most ppl posted already, I really hope they chose to change this spam/low droprate system. It's not fun, not for the 24/7 players who can already do the speedruns with their eyes closed, nor for the casual players who just like all, need to trust their luck and not their efforts and skill to get loot.