If Pike makes Kirk look like an aggressive wildcard, Reynolds would make Kirk look like a bank clerk. The running theme in the show would be how, each episode, he barely dodges a court marshal for whatever he did.
No clue. I honestly don't watch that much TV anymore. A younger Richard Dean Anderson might have been interesting in the role. Who to cast for Burgoyne though, half of the out non-binary actors are already in modern Trek, lol. (Also kudos to Peter David for the non-binary representation in the 90s, wow.)
Which would cause more mayhem, Malcom Reynolds, just trying to survive, or Katherine Janeway getting coffee?
Edit: also it's Court Martial. As in Martial (Military) Court. The Marshalls aren't coming to arrest you in Starfleet, no guarantee of that in the 'verse I suppose