Also, I probably won't allow specials at -all- except maybe the Sword L1, being completely non-unique -and- a pain in the ass to unlock and all. They were also entirely irrelevant for me the entire game (I never unlocked anything besides the Sword L1, which is automatic).
Well, yes, if you don't get them, they won't have any relevance. :p For what it's worth, if you do bother to get them - and I found the level 1s easy to get off of even 1 villager if you leave your 3DS in sleep mode - they are quite good in-game, if not cheaty good. Specials definitely allowed me to beat some boss fights without grinding more, as uber damage + buffs is pretty great, and before Performer / Pirate hard to set up even intentionally. Even then, the special music buffs are still better because they ignore character death - a character can bite it & be revived and get their buffs back immediately. With enhancements, the debuffs can last 5 turns after the music even stops. Also, you probably know this already, but chaining specials extends the buffs of *all* of the previous specials - I haven't done this yet, but it seems theoretically possible to even chain 5 effects at once, by opening with a Katana / Sword special that can easily work back up to a level 1 by the time you finish chaining the other 3 character's specials whenever the music gets close to ending. But even still, chaining 4 specials is pretty disgusting, there was at least 1 boss I took on "too early" and was kicking their butt until my chained special music ran out, and then he thrashed me. It is a significant advantage for the PC party.
(but not cheaty, like FFX bosses vs. Yuna walking in with all her Aeons in Overdrive. the poor doomed things.)For just a few quick examples - Withering Ripple, the L2 Rod one, slaughters almost every boss in C2 thanks to debuffing them AND sticking 'em with an elemental weakness of your choice when you have Spellblade + Black Magic available, and is just fine in C3. Katana Ultimate offers +50% Speed for your team and easily hits 9999 damage, pretty awesome vs. speedier bosses. You can even do silly stuff like strip Poison Resistance from bosses then use a Poison touch special. It's good stuff! (and it won't be nearly as good in the DL anyway, since the team buff + special chain effect are MIA, and starting uncharged means that only healers / drainers will realistically see 'em ever, and the specials probably lose out on all the upgrades. Although... I guess that damageless healers might fear a Katana L1? In general Katana users would rather just 3x Default -> 8x beatdown vs. true tanks, but if somehow that doesn't work, then 5x Default -> Moonshadow + 3x Attack -> 4x Attack might do the trick. But shame on any dueler that can't kill the BD character given 6 turns to do it in, even vs. Default in most of those turns...)
Also, interesting points from Elf on BD high-damage duelers, at least the ones whose damage is spammable and doesn't require too much setup. Trails in the Sky might have been the wrong comparison then as the damage queen of that cast, 100 CP Estelle, "only" threatens 1.00 PCHP damage or so on turn 1... high-damage BD duelers might yet do much better than that! We'll see.