DoTs are already pretty powerful, why on earth do they need to be any stronger? The idea behind DoTs is that they're efficient means of damage with higher power than a nuke but take longer to reach their full potential.
Being able to 'see it tick' on a tough mob would be ridiculous because you'd be shaving off massive chunks of HP. I guess it's fair to assume thaumaturge is your main or something.
Channeling spells such as that shield would be awesome though, perhaps something for the future, who knows!

I'd love to see some classic skills like Highwind return in the long run, would be awesome for Lancer :P