It does support that! That's how Aaron's [Product network](https://github.com/ctn-waterloo/nengo/commit/0fe7f7eef0cfc91d69b49d63abe471746f46d2b8#diff-27a174b85c0531f218156dde7d2eaf86R27) routes input to the EnsembleArray. In the reworked CircConv, I'm letting `Product` do that part of it, but the `_input_transform` function still has different behavior for `transformA` and `transformB`.