Of note, most people use Sonic Boom as their Glare since it has a weave window, though tank mimics will definitely want Goblin Punch as of the new patch (instant, frontal positional). Tank's actually a lot scarier than heal, since your mitigation is casted instead of instant oGCDs and you have less time to react to a tank mechanic. Also you can drop Sardine if you're fighting something not immune to paralysis; from what I can tell Bad Breath has a guaranteed paralysis interrupt on cast. Honestly tailoring your kit to each situation is more fun than the actual gameplay part, at least in easy content. I can see BLU raiding being really interesting just because of the amount of coordination you can do to keep 100% Magic Hammer uptime, for instance.

I like that BLU is weird and jank, and I hold the moderately unpopular opinion that I don't want it as a "full" job (we already have a lot of them. I dislike Square's design direction with "full" jobs. I lack FFXI nostalgia and the desire to "main" BLU.)

I wish they'd go pants-off with it instead. They have kernels of neat ideas like spells that are much more powerful when it's raining, or channeled strong dots, or Surpanakha's whole deal, but they take those ideas, slap a two minute cooldown on them, and... they're just a goofy Fleche or Contre Sixte or Misery. Boring damage cooldowns that you just press whenever they're up, or delay 5 seconds for a 2 minute buff.