But a steep drop is very easy to make, and the water doesn't travel down it (because its infinite) so making it check for waterfalls for an energy boost wouldnt really make much sense if the water isnt moving from its place.
i definitely like the idea of a tidal generator but think that it should be a level 2 hydro solution. I mean until fairly recently using the power of sea currents and tides just has been fairly expensive. I think if such a power source was added to IC that it should reflect that cost at least in energy. Perhaps have it require carbon-fiber In their construction which would put it as a mid level ic2 power supply just a step beyond solar and able to produce a similar amount over a minecraft day (including night) with production peaks at dusk/dawn?
at least that's my 2 cents for this round of posting