#6 puts a cost on 5. It makes it a purchasable upgrade.
As for #7, combine 8 green runes. You get an experience value of 240. It's blend value is 270.
Confused? So is Tynon's math. The 30 from the first rune counts towards blend but NOT towards exp.

Andy, thanks for the reminder concerning an unequip all button.
It should have been "TEN Rune Temple ideas"

Gorgon