Proper Balance Moonkin Glyphs

[apepi]

Glyph of the Lone Moonkin: You now replace symbiosis with the spell Single Star.

Single Star 2 minute cooldown
Using single star will decrease single target damage by 50% but increase aoe damage by 50%.

It would also cover your character in a special effect, think of algalon but boomkin form.

[Fountaiin]

They're not going to make a glyph that replaces one spell with a completely different spell that serves a completely different purpose.

Not to mention clumping all spells into "single target" and "aoe" isn't particularly productive in terms of balancing.