Ideally:
Yztarg: Calcifying Claw - High WSC and fTP with petrify. We don't have a petrify yet.
Twitherym: Slice 'n' Dice - Damage with a strong DoT, upgraded Disseverment
Chapuli: Nature's Meditation - Have it do the same thing as subbed meditate on a long recast, a 2~3/tic regain for 3~5m, or a potent store tp bonus.
Leafkin: Phototrophic Wrath - Attack Boost, Magic Attack Boost, and Enlight. I'd be fine with just getting the Enlight part, though.
Panopt: Crushing Gaze - Could use a stronger Slow and a more reliable Gravity, the ones we have are too weak, too annoying or expensive to apply to be useful.
Snapweeed: Tickling Tendrils - Another physical damage with stun. I don't want the other two for various reasons.
Acuex: Pestilent Plume - AoE magic damage, plague, blind, and mdef down. None of their attacks are particularly interesting so w/e.
Tulfaire: Pentapeck - Cheap piercing damage with additional effect of a short amnesia. Akin to Heavy Strike and Delta Thrust except with a higher D cap and hopefully better fTP with no stupid penalties.
Craklaw: Impenetrable Carapace - Stoneskin or something. We need a new one of those.
Matamata: Cranial Thrust - Change it to single target, give it a high fTP and WSC, and keep the max HP down debuff moderate. We haven't got one of these yet, so it'd be nice to have. Need some powerful physical spells now that our old ones are mostly ***.
Umbril: Paralyzing Triad - Moderate fTP and WSC with a moderately potent Paralyze effect. I want a useful paralyze.
Marolith: Metamorphic Blast - Another high fTP and WSC spell with a strong DoT pls. Two Disseverment-esque spells would be phenomenal, and it looks/sounds cool.
Melee Velkk: Velkkan Pygmachia - Moderate fTP and WSC and leave the dispel effect as it is. Would be somewhat useful sometimes.
Mage Velkk: Saurian Swamp - AoE earth damage, bind, and slow. We are sorely lacking earth based nukes, may as well give us this.
Meeble: Thrashing Assault - Single target high fTP and WSC attack with added effect of a reasonably potent DEF down, say 20~25%. Make it work, too.
UL:
Gabbrath: Batholithic Shell - Stoneskin, Blaze Spikes, and Haste. Yes please. Have the Stoneskin absorb about double what a normal stoneskin would absorb, moderately potent blaze spikes, and have the haste set at about 20% or something but last less time than wail. Can even get rid of the haste, I don't care.
Bztavian: Vespine Hurricane - AoE wind damage with a potent attack down and magic defense down attached.
Rockfin: Carcharian Verve - Potent attack and magic attack boost for 3~ mins. MDEF boost would just be a bonus.
I probably missed something, idk. Tree and Bird I doubt will even be considered at the moment, maybe next time. I doubt we'll get a spell from every single one of these, so if I had to choose the most important ones it'd be Paralyzing Triad, Metamorphic Blast, Slice 'n' Dice, Cranial Thrust, Phototrophic Wrath, and Pentapeck.