I'm glad this topic was created because I am in the same predicament. I am thinking of going runes of divinity for my pwr/tough/vit armor but for my pwr/prec/crit dmg i am not sure whether to go into air or lyssa. How does the sup rune of air give you swiftness? Do you just use temporal curtain and the 20% swiftness duration kicks in thus giving you almost perma-swiftness? sup lyssa seems pretty cool too, but I get frustrated at times with the speed of a mesmer and wanted some more clarification on air. Thanks!
The 4th bonus on Superior Air gives you 5s of swiftness on heal.