I can't help but feel our magical blue magic needs a major buff, our best magical nukes at the moment are probably dark orb and charged whisker and even they are nothing compared to our physical spells.
The problem with magical spells is there's not enough power behind them to be used over our physical spells, dark orb for example, is a good nuke and can do fair damage, but compared to spells like quadratic continuum, amphoric spikes goblin rush etc. it's weaker than them, on top of that it has a longer cast and recast time and has a significantly higher spell cost.
Charged whisker i suppose is more reasonable seeing as it's the highest AoE damage we can produce (not including UL spells, i've yet to try those enough) but still the mp cost is not worth the damage, and it only really shines in abyssea when we've stuffed ourselves with MaB atmas.
Magical blue magic just needs a power buff, considering physical spells are supposed to be faster and cheaper but weaker, while magical spell are supposed to be slower and costlier but stronger (except for AoE which should really be kind of a middle ground). But because magical spells aren't strong enough they aren't living up to this role and end up being nothing but things we set for triggers.
Also, older spells need to scale better, or more options need to be added, charged whisker and thermal pulse are our only decent AoE spells and they are both aligned with light, and everyone's grudge and dark orb are our only decent single target nukes and they're both aligned with darkness. We need more high level light based single target nukes and more high level dark based AoE nukes (or as i said make older nukes scale better).