I was commenting how the figure itself probably won't be very interesting to most people. It sounds like it will kind of look like venom, but this is going to be pretty far off from the comics as you note (in appearance, character motivations and history.)
Regarding the movie, the reasonable expectation is that it will be pretty bad. What I have heard so far is pretty terrible. The executives have a pretty shotty track record, but considering they make movies not to be good but to sell toys, they are largely successful.
Optimism in this case is to expect something terrible, and be presently surprised its suicide squad instead of fan4stic. My guess is they are going to have like 4 CGI symbiote characters running around in this movie, making it feel like a sequel to Electra plot-wise. The trailer reminded me of the first ghost rider movie a bit ( a movie that people also thought looked promising.)
Marvel wants to make movies that focus on the characters, develop good stories, and focus on long term development. Venom doesn't have people producing it which know how to do that.