I feel as though its a matter of playstyle. Gilliam, I've found, works great as a wall/defensive player, thats his niche. I've always liked Amelia most as a Palladin, as I feel her base stats suit this role better. However, General Amelia becomes a great rushing character, for those that for example, on Chapter 19, (where you fight Riev) woukld rather rush and kill Riev than just attempt to survive. Again, its all a matter of playstyle.