Yeah, Enterprise seldom could even make full use of their main character nonetheless keep any regular backup characters around. There were a few exceptions, but it did seem to be the rule mostly.
Catwalk was a fun episode that it really seemed to capture the vulnerability of space exploration, where they're tightening down the hatches to survive the space storm and all.
Dawn.. about the only think I liked about it was it acknowledges the language barriers that alien races would inevitably face without a magic handwave of a universal translator. Enterprise was good about that element of things.