I'm going to watch the video, as it seems well put together...

As of now, however, I actually enjoy BLU for what it is. I just wish we had two points looked at:

1) More reasons to keep running their "endgame" content. I really don't need Allied Seals anymore, and I've got everything a Blue Mage has to offer sans the Morbol mount, because that depends on a set of logistics on a much larger scale (finding a proper static). Maybe add very expensive things on the vendor, or even better, Revelation tomes for the daily log completion. Enabling deep dungeons for solo BLU with their own achievements and scoreboard is also another big plus because it's a place where you can effectively run indefinitely due to the random nature of the rewards there.

2) Better realized tank and healing roles. They have more tools now, but still lack a lot of refinement that the DPS aspect has. Tank Mimicry should make the job scale with tank stats, and make the mitigators insta-cast. Healers need oGCD healing spells to complement their kits too.