I think it's not that simple. I never seen ANY shine and reflexion effects in WZ 2100, so there is just NO such mechanism implemented in the game engine itself that would enable such things, but of course im not SURE of it

. Adding double texturing to everything in the game on the other hand is possible, and making the second textures containing only light maps (lumel data only) would propably do the trick for now. Unfortunately double texturing might affect game performance, and i'm affraid this would not be a minor performance decrease at all.
We can ALSO use the same effect as the one used by factories to (that one used to generate "steam") generate more dynamic "splashes" in the water with small flat object for the splash circle on the surface. Adding fade and some shrink effect to that simple flat object would propably be half way between what we have now and what you guys expect it to be.
Finally there is a matter of waves comming on and off the shore, so the water looks not that flat and calm. Maybe it could be done by adding different, animated texture to the water where it is shallow enough. I have no idea how to make it without just adding new blocks (new type of "map block") that are the same for water ( same way rendered) as the cliffs are for land, so it keeps tthose waves come in the right direction. (Notice that cliff textures also face the land vertical, and do not loose that direction to collapse into horizontal mash instead of vertical we have now)