I hope Minthara will somehow be an option even if we decide to go the "good" route.
I'd like to see some new companions also. A dragonborn, maybe. A half-orc. In general, I think it would be nice to have at least one companion for all the major class types. A fighter, a barbarian, a paladin, etc. What would that leave? A sorcerer, a monk, a bard, and a druid?
It would be nice if we could pick up other folks, as well. I'd enjoy bringing in Aradin and his crew for a bit. The same goes for the three tieflings debating whether or not to stay and help or head straight out to Baldur's Gate. I can't think of their names right now.
And the tiefling who needs help swinging his sword. It would be fun to build him up into an impressive sword master over time.
I would also like random pre-generated mercenaries. Sell swords that can be hired for set rates. Some good ones that are actually helpful and maybe even some secret bandits mixed in. Bad ones who will turn on you when you least expect it, hoping to steal all of your gold.
Then there are the animals and summoned creatures. I really wanting them to be able to join the party, more than just hanging out at camp. Scratch out scouting with the ranger. The owlbear cub running along behind, trying to keep up. Shovel staying with the party even after a long rest. Or the ability to write down the "Summon Quasit" spell so that Shovel can be summoned regularly.
Oh, and Sazza, the strongest of the tribe. The goblin prisoner. If we save her life, it would be nice if she could officially join the party at some point.