This may be just a small little thing but I felt a bit disapointed when I leveled the warrior skill "consecrate" to lv20 only to find that it only heal 60% of the team. While this sound very good on paper, it is a big let down ingame because even this spell not only takes the life of the caster (healers being one of the most important ppl to try to keep alive) but also it only heals the team slightly more than a good team heal scroll (which heals 50% all, requires no sp and doesnt kill the caster). now im not saying that the spell should heal 100% or even 90 or 80, but i do feel that the spell should be slightly stronger so that we arent paying 1200-2500 sp and our life so that we get a tiny 10% better heal.
If you do wish to take this suggestion then as a player I would say that having the spell jump to 65-70% heal instead of 60% (65% is still a lil on soft side but its an improvement).
Also if you feel that increasing the healing isnt a good idea you could make this spell truely worth while by keeping the low 60% and also adding the effect that it revives dead partners by some small degree (5-10% revive so that it isnt overpowered and cant be taken advantage of) this would make the healers sacrifice worth it while still making sure the team pays a heavy cost, the healers life (healer tend to have 30-60k hp which is a big loss indeed)
A final alternative would be to decrease to healing but increase the number of turns it last (for example: instead of 60% it would be 40% for two turns) i personaly am not a fan of this one though.
in my opinion I like the idea of the light revival and heal as it seems to best embody the spirit of this spell (sacrafice self for all?) and there are few times where the entire team is only slightly weakend and not dead so that the spell would be worth the healers life. but in the end its your choice to change it or not. I would like to add that I understand that if you increase its power you may have to increase mp cost slightly (1-2k mp for a spell that kills you is a lil much but anything under that seems managable.) I hope you take this into consideration and improve upon this currently underpowered spell thank you.