You were right to expect a lot more Eugene,in my opinion, and 'thrown out with the bath water' really sums it up well for me.
I think the characters in the adaptation were far more shallow and ill defined, hence why I found it rushed,and I didn't like the airy fairy nightmare sequences, they seemed to be shoehorned in as a convenient mechanism to explain far too much that had been left out.
All in very disappointing production only relieved by Julia MacKenzie's grasp and portrayal of her character,I also thought the young actor playing Krystal and the lad playing Andrew were excellent.