It will not provide to anything that is not a belt, belt balancer, or underneathies. This makes its utility go down. This mod would imply otherwise.

I don't think so, you just need to add a belt between loader and balancer, the space that this mod save is a lot more than justa s ingle belt... if you can't fit one in between loader and balancer you sure can'f fit a standard belt balancer... so... maybe you've done something wrong.

In any case the ability accept input/output by loader is not a bad idea but I don't think it's game changing.

Yeah, you can do some jacked-up stuff with the mod as-is, but sometimes the space for a single belt in between loader and balancer part isn't there.