It more complexity and building design when using the mod, not in crafting the actual items.
The easymode @
1SDAN is talking about has nothing to do with the recipes.
Buildcraft is pretty fun to design with; TE not so much.
Extracting items takes 3 blocks of space (pipe, engine, lever/signal). More engines=faster extraction, at the cost of space. Higher tier engines are even faster; at the cost of fuel. Bring in gated controls and you have some pretty sweet stuff going.
By engaging the player with the inherent limitations of the mod (engine control, item overflow ect), and providing the tools for the player to design his/her own solution to those limits results a more rewarding and creative game than simply providing the solution right from the off.