In comparison to Spider-Man, I felt that Venom was the perfect size in the film. Venom has been drawn several different ways over the years and we all know it's part of what the artists do to visually portray strength, power, and menace in a character. We don't need as much of all that in a film, but that's my opinion.
Venom, as a Spider-Man 3 villain, played by Grace, I liked and was pretty well done.
BUT! Venom as a Spider-Man 3 lore comic/tv/game villain, played by Grace as a Spider-Man 3 villain in the movie, I didn't like as much. It was just too little too late and too fast. I'm still on the fence about what the hell a solo movie about this character is going to do.
-TNC