if you want to modify the waves itself then why not exploring the options of hot4d which seems to be a copy of the houdini source. i dont see the need for trying to screw around in rhino with something which was not produced there. changing this in rhino does not make any sense at all IMHO. of course you can change some stuff there but the patterns of the finished mesh can not be altered in a useful way without at least using the new wip tools converting it into subd and using creases for example which then again only might help getting crispier edges of the waves. changing patterns would be too tedious.
if you want to explore other options for creating wavy surfaces for better control of the result, then check out grasshopper, here one recent topic i remember which might be interesting. @laurent_delrieu is a pretty good dude to address, should you be interested and eager to invest a bit more work he might chime in to give some advice.