Lennox...why must the good leave the movies?!?!?!?! I liked his role in fighting side by side with Optimus and his team. I just hope Tyrese Gibson will be in TF4...I definitely like his character. This is a major downfall for me, but at least there will still be some aspects of the movie I will like and will be looking forward to seeing while watching the movie on the big screen.
There will be more to replace the ones not in it. I doubt the quantity (or the screentime) of humans will change much.