I haven't tried the new totem system on my shammy, but I'll say it wasn't hard to lay down totems before. I mean you lay them down and do your thing if it covered buffs or not.
I really like resto shamans now, healing is a joy and not a struggle at all to keep up with other healers. Hopefully it will stay that way, all the way through MoP!
But I kinda miss being able to spam dispell, but thats mostly because of pvp.
I think the totem system was due for a remake, what i dont like is the totem clutter on all bars. Would love to have a default call of... bar back again : /