I love this mod, tho I just realized something. With this mod, the output ports only have 1 pipe-segment to empty into, before that pipe connects to a pipe usually in the floor. With some bathroom designs, this can momentarily cause the output to clog, so I occasionally see my toilets saying out-of-order.
Without this mod, the most designs have the output flowing up, which gives each output several pipe-segments to empty into before connecting to other pipes, so those designs don't seem to cause those temporary out-of-order warnings I seem to get with this mod.
Obviously we don't like the idea of draining upwards, so I thought of a compromise that would give the output pipe more segments to drain into.. Would it be possible to move the output port one space up from where it currently is? I know that would put it on the same level as the input port, but most people don't attach the pipes all in one line/row anyway, they run individual pipes to each port from above or below, then connect to a pipe in the floor or ceiling, so it wouldn't matter if they're at the same level, and most designs wouldn't need much alteration to fit the change. This would give the output port an extra Pipe-Segment to empty into, before reaching/connecting to the main drain-pipe in the floor, thus reducing clog warnings.
Just a thought, obviously the issue itself isn't even a real problem most the time.