I understand the spell is iconic, but it's clear that it just can't be balanced. Every expansion it's reworked, with talents and Glyphs to attempt to support it, and still sees very little if any use. It's simply caught in TWO Catch-22 positions:
- If it can outheal or even significantly buffer incoming damage, it's too strong, if it can't, it's no use.
- If it does enough damage to be worth casting, it screws up rotations, if it doesn't do enough damage, it's not worth casting.
They are very clear irreconcilable issues. So why does it continue to be reworked, and reworked, with attempts to support it with Glyphs and Talents added which simply can't be allowed to go far enough to fix either of those issues lest the Talents and Glyphs themselves become regarded as "too mandatory".
It really feels like a whole lot of wasted effort; it's had the same problems for over 9 years, they aren't going to go away now.