Super Seed fan right here! It's one suppliment that I use regularly (pun intended :P) The taste seems a little bland to me, but adding a little stevia to it fixes that problem. Super Seed has stevia in it anyways, just not enough for my taste, so I don't see the harm in adding a little bit to it.
If the thickness of it is whats bothering you, then just mix it with more water than before, and put in an ice cube or two.. and that should really help out. Just don't make it too cold, since cold liquids and food's can hamper digestion.