As a tank, I actually enjoy the current system. The enmity icons on the monster list are quite useful and it's more information than most MMOs provide. Even in WoW, I don't remember getting that information without running a meter add-on (which most everyone runs, to be fair). FFXIV is very generous with tanks enmity multipliers, assuming you stay in tank stance. It's quite easy to build up a huge lead, swap stances if you aren't taking too much damage, and then pretty much do whatever you want. My only real complaint is that the enmity list doesn't show mobs engaged with the party that you haven't touched yet. I'd much prefer if it would show all mobs engaged with the party. Sometimes an add can sneak in and harass a player at range and I don't notice it for a while.

Usually when I lose enmity lead, it's my fault. I can play a blame game with enmity and say that the DPS splitting their targets instead of focusing is the culprit. That's not wrong, but I could have prevented it with an extra flash/overpower or interleaving my attacks between the split targets... or even marking my targets and badgering the DPS to follow a specific kill order. Sometimes I'll get a BLM nuking a group during a pull before I can line up an overpower cone or such... beyond my control, but there is usually I something simple I could have done to avoid it. I love it when DPS minds their enmity, giving me a moment to position pulls, keeping their single target DPS on one target (AoE is fine, please AoE), and such... but I don't really expect it with DF groups and we're given generous tools to handle it.

Of course, I'm all for having more options for information! A meter showing my enmity % and the % of the next highest player would be useful.