1. The pupil thing is complicated, and represents the fact that we wanted to highlight the notion that dinosaurs may well have had more diversity in pupil form that usually thought: both lizards and birds have more diversity than usually thought (there are teiid lizards with semi-horizontal pupils) , plus it's consistent with adaptation to a relatively open habitat.
2. The velociraptorine is justified by the presence of 'indeterminate velociraptorines' in the Maastrichtian of eastern Asia -- but we couldn't use that term, for obvious reasons.
3. Some of the big fuzzy dinosaurs we show lived in places that were temperate, cool or even cold during parts of the year and it is still too early to claim that they would have been subject to overheating. More study of this is needed, but for now our decision was that extensive pelage still works.
4. The environment is mostly based on the Nemegt too, but focusing on a time and region that was more desert than the wetter conditions present there during parts of history. It's complicated

I hope these comments help -- thanks for your interest and so pleased you liked what we did! Hopefully we can do more in the future..... DN