There are some problems with FATEs at the moment. (And dungeons.)
1. Currently there are just too many players in smaller zones where FATEs are close together. Mor Dhona for example. This is causing FATEs to be easily zerged and less fun because you're not really playing your class other then spamming AoE abilities like Flash.
2. FATE's are not scaling well to the number of people involved.
3. Some FATEs are exploitable such as Dark Devices by Bluefog and give much more XP then they should due to an endless supply of mobs that give kill XP.
4. There is no other play alternative for leveling to FATEs. They give more XP then any other option in game.
These issues can be easily fixed. Nerfs the FATEs with limitless XP monsters being farmed while avoiding the objective. These monsters should not give XP; just the objective should.
Decrease spawn times of FATEs in other zones for higher level players such as Southern Thanalan, East Shroud, etc. Increase the times FATEs spawn in places like Mor Dhona. Get people out into the world instead of two zones. Scale these FATEs past the 5000 server population they are still set for. 7500 server populations decimate the content now past the point of it being enjoyable.
Increase dungeon rewards in terms of crafting mats in chests, aetherial gear in chests, and over all XP rewards. Let us have chains for increased item drops for trash that give better drops up to dropping Tomestones. This would be like the monster kill XP chains, but would apply to monster crafting drops until you cap the chain at which point the trash gives a Tomestone per kill until the timer wears out.
Please leave comments for improving the experience. Other threads are just complaining about the issue and feedback is being drowned out by complaints and people that currently vehemently defend the system without thinking about how it could be improved. Thanks!