I have to say the only characters that really made an impression on me in this were Hiromu and Chida/Cheeda/however they're spelling it this week. Gorisaki annoys me - that character type wasn't entertaining when it was Deneb or Ryuunosuke, and it's not entertaining now. Also the thing with his face spinning around reminds me of The Exorcist. Everyone else is just ... there, but that's understandable, it's only the first episode.
Loved the ED, did not like the OP, it just makes me impatient for next week so we can see the actual OP sequence.
I am really impressed with Yoko. She could turn out badly, but so far, it looks like Kobayashi has actually tried to write a female character outside of her usual comfort zone!
Action scenes were great
Enter is awesome, very promising addition to the ranks of Sentai villains
Liked the transformation sequence
Everything looks good so far ...