You know I kind of let go of holding on to dnd lore, but wow are vampire spawn strong. I agree with reworking Astarion into a thrall unless he is the final boss or a expansion boss. Vampire's in general don't seem very low level friendly, but hey what do I know. Ilithid vampire spawn turned full vamp I think may be the strongest undead non divine in dnd. I think.
I would like to see a normal high elf or wood elf girl on the good side. Maybe a gloom stalker or a bladesinger.
A hardy male dwarf barbarian or paladin. I'm thinking kind of like dragon age origins legion of the dead or Oghren. Path of the beast, storm herald, or ancient guardian.
A gnome artificer sounds good to me. I like that a lot. Needs a gun.
Halfling sorceress with wild magic or a human sorceress that likes explosions.
The things I want aren't phb though. Tieflings but no Aasimar still kind of pisses me off honestly. All the cool subclasses like rune fighter and mystic are the stuff I like. You wouldn't hear a peep of complaints out of me if we got at least some of the good stuff. A lot of fixes to 5e aren't phb.