Ways to obtain xp:
1. Questing
2. Fates
3. Leves
4. Guildhests
5. Mob Chaining
6. Dungeons
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Dungeons
Let's face it dungeon queues as a Damage Dealer, DD can be a bit long. This means pretty much all other forms of xp are better if you're doing them right.*
For tanks and healers queue times are much more reasonable and they pull better xp.
Pros:*
Group based play taking into respect with the holy trinity of mmos.
Cons:
Way more DD than tanks and healers due to the number of tank and healer classes compared to the number of DD classes.*
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Questing
There really isn't much to say about questing other than quests will dry up after your second class hits 50 if not sooner.*
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Guildhests
I can't really comment on this one since I haven't touched Guildhests at all. I'd love if someone who has can give some insight into this.*
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Leves
Leves are decent xp for all classes, but let's face it. Leves don't stand up to the xp gains of fates and dungeons.*
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Fates
Currently fates are absurd xp for everyone involved assuming you join a Fate farming party. This is due to the sheer number of people rushing to leveling cap by farming these. The sheer number of people allows players to zerg Fates.*
I personally understand the fears and concerns of players, but I am of the belief that Fates will become much more reasonable as players hit 50 and the rush to end game slows down. This change should bring fates down to a much more reasonable xp/hour and we'll see players doing other methods of leveling.*
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Mob Chaining (Chain Bonus)
This feels very much like FFXI and FFXII. The chain bonus is definitely a good xp grinding system that plays well from a party standpoint. We already see people "exploiting" this mechanic in certain Fates.*
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Final comments: personally believe Fate xp is in a good place once the initial race to 50 slows and that we'll see more leveling using the other methods after that point.*
If anything we might see leveling dailies come in and xp slightly buffed to Leves and possibly Guildhests (not sure on how the xp gains on these are. If Fate xp farming does remain out of whack I'm certain Square Enix will nerf it, but for now they are waiting and observing. In regards to the "exploit" of certain fates to infinitely farm mobs for chain bonuses... Well I'll assume that's an intended mechanic until square says otherwise since chaining mobs is obviously an intended leveling mechanic.*
Hopefully my post starts some good discussion and doesn't turn into a flame war or a qq thread about fate farming.*
I also apologize for any grammatical and/or spelling errors due to typing this on a tablet.