My take, having just watched the episode:
I feel like they borrowed a bit too heavily from Trek characters for their own good. We have a pair of roguish pilots (ala Tom Paris), the factual alien (ala a Vulcan or Data), the strong security chief (ala Worf, though the character feels a bit like Torres too), and the strong/motherly Doctor (ala Bones, Crusher, Pulaski). Even Seth's character has hints of Kirk and Archer in him.
The humor ranges from decent to badly juvenile. Some spots could have been done way better (like the dog scene, they could have had the pilot say "Did you see what I just saw?" and had the other respond in the fashion he did and it would have gone over better I feel, maybe even made people rewatch the scene to see what they were talking about, rather than just blurt it out and ruin it, imo). Some of the humor got a chuckle from me though they encounter a sealed door that the Captain can't open, so he turns to the Security Chief and asks her to "open this jar of pickles for me". She steps back, takes a run and not only breaks down the door, but most of the wall it's built into. The Captain examines the destruction, clearly impressed, and quips "I loosened it for you." It felt like a very Kirk-like comment.
I was expecting more from the robot. When Seth's character said they were extremely racist, I was waiting for that to show through in its interactions with the crew, but the most it was shown was a throwaway line from it saying it would be his best officer (or to that effect).
The Krill feel like Klingon/Romulan stand-ins, and the name is rather poor. Also, chin-pincers. :p
I like that not only the ship took serious damage, but the captain got shot too. It shows that the Orville isn't invincible and neither is it's crew, highlighting the fact that the ship is a mid-range exploration vessel like they repeatedly called it rather than the top of the line ship like the Enterprise .
The special effects are not bad.
It's not horrible, it's below average Trek with a bit of mediocre humor thrown in. There's no Neelix (yet), and the characters at least have some personality to them (even if we've seen those personalities before). I'll be watching the next few episodes to see if it improves or falls on it's face, but I'll be watching.