This has probably been suggested a lot of times, even though it's not in the ideas list, but what's the possibility of making a sort of 'advanced' pump that acts similar to Buildcraft's pump? As in, it doesn't just pump the block under it, rather it pipes the entire body of water/lava.
Right now, pumps seem kinda useless when they aren't paired with a miner. So, when you would craft an advanced pump, you would trade the ability to connect with miners for more liquid pumping.
It should be crafting like this:
Re-Battery Miner Re-Battery
Mining Pipe Pump Mining Pipe
Mining Pipe BatBox Mining Pipe
Or something like that. I'm not really sure how to make things balanced, in terms of energy and the like.
Again, sorry if this has been suggested before, but it wasn't in the 'ideas' list and I'm not about to search through 10 pages of topics.