In my opinion, utilities should offer something powerful to a profession and not simply give something that can already be found in the weapon skills, this is why I believe that active conditions on signets are not very useful, their usage would not affect the outcome of a battle in any way.
Signet of Fire
-No viable suggestion atm-
Signet of Air
-A 2s daze would be preferable to a simple blind, while somewhat useful , a single blind application remain useless compared to a cantrip
Signet of Water
-Active use : ‘Ice Barrier’, ele send back 30% of the incoming dmg for next 5 attacks
Glyph of Elemental Power
-Increase crit chance to 33%
-Reduce CD by 5s
Suggestions and Comments are welcome