[Buildcraft in Attack of the B team]

I tried adding Buildcraft to the modpack, but it didn't work out. My friend told me the mod doesn't work with the modpack, but I didn't really understand what he meant. Can someone please tell me why it doesn't work ?

[Adding in Thaumcraft ?]

I personally think they should add Thaumcraft to the ModPack ! 
Just think about all the things we could do and build and create using all the mods we already have + Thaumcraft !
I think this mod will take the ModPack to a whole new level of awesomeness !

What do you guys think ?