What I've been saying from the beginning:
1. Turn Trip/Reed into an "Odd Couple" situation. Their differences would be great comic relief.
2. Go Archer/T'Pol for the romance plotline. Better chemistry between the two actors.
3. More Billingsley. The man was brilliant.
4. Add Shran "The Man" to the crew. Coombs is a strong actor who's acting abilities can only improve everyone elses.