I do not know how difficult/impractical it would be to implement, but having gone through a couple games, it often seems like the irrigation sprinkler either covers too much/not enough, or just the wrong area...especially if one's crops are squeezed into a non-grid/contoured area. From that, I was thinking if it were possible to make something like irrigation/drip lines using the water pipe mechanic that would just irrigate the tile said pipe is on, and/or perhaps those one tile adjacent. Balanced with either a higher per-tile construction cost, and/or less efficient water usage (due to running constantly).

And thanks for creating/supporting such a fantastic and essential mod!