Man, it would be really hard for me to fill a top ten list of scifi shows. Top five, I think I could manage.
1. The Expanse. No question, I loved the books, I loved the show and its casting. One regrettable discovery about a member of the main cast aside.
2. Stargate Atlantis. One of my first real introductions to scifi, and a solid show for the majority of its episodes.
3. Deep Space 9. Not gonna lie, I had a hard time getting into most Star Trek. Everyone always talked about its engagement with philosophy, but ever time I tried to watch an episode I got cheesy scifi camp instead. DS9, on the other hand, had a few misses, but its tighter character focus made it a lot more enjoyable for me.
Hmm... already getting to the point where I don't know what shows I'd add to this list... I really need to watch more scifi... Andromeda started strong but was ruined by the lead actor in a spectacular fashion, Firefly doesn't meet the OP's requirements despite being a show I love, Dark Angel I loved as a kid and still have a fondness for, but was honestly not a great show quality wise... The Orville is shaping up to be a solid show, but isn't in a "finished" state, so it doesn't qualify either...
I must apologize for this statement. It wasn't a "stillborn American version", but a crappy Canadian version. Shot in Vancouver by CTV/Bell Media/eONE, with Canadian military trappings. They did obviously aim for the American market, however, as they kept on saying 'lewtennant' instead of 'leftennant.'