Yes, I do think there is such thing as being too imaginative.
In fact, sometimes it is a curse, in my opinion. Say, when you get a cut, and you imagine the blood flowing from your heart faster and faster to gush out of the cut. Or you are taking your pulse and you can imagine it too well... It made me wonder what people used to think in the medieval ages when they believed the blood sat still in the body, and did not circulate. What did they think their pulse was, then?
Anyway, why I said all that is because sometimes a good imagination can cloud your judgement. Say you really really love a story. Everyone else hates it. Why do you love it? Because with your imagination, you can see what it could be, what it would look like with grammatical correction. Or is it because no matter how bad the writing, you can still picture the scenes and characters because of your imagination, while others simply cannot?
Is it a blessing or a curse to have a good imagination? In most cases, I think a blessing.
On another note, that poem I didn't have time to enter? Well I lied. I entered last minute.
And... got a phone call today saying I had gotten a 'commendable job' award. Awesome considering I wrote the poem for an English class, and sent it off lickety-split.
Maybe if I had tried I could have won...bittersweet.
That poem: this one.