Well, Shadowheart and Lae'zel could finally come to blows or have an argument and decide you have to choose between the two of them (Seriously, it's a pain just to get Shadowheart in the party oif Lae'zel's already there), and then Gale could stick with Shadowheart (Considering he started hitting on her in your first conversation) and Wyll could stick with Lae'zel on the basis of their idle dialogue - Wyll's the one person I've seen at least get some positive reaction from her while he was flirting with her. Choosing your companions doesn't have to be all doom and gloom!