I love it so far. One of the few things for me that makes update 9 great . I Think it is perfect for divines. Good damage. Cool effects , level 5 slot for fvs so we can fit it in. It makes playing a divine caster so much fun now. Using this in rotation with other spells really is a welcomed change compared to pre update 9. Still quite a bit of sp to make the spell stack when totally maxxed out. It is a proper trade off as is.
I am all for keeping it the way it is. Love it! If they changed the spell to not being able to stack. I really don't think to many players would bother even taking it. I would not. It would just be another lame divine spell.