I never use the Wire Relay and I consider it better than adding x points to the wire and having to move several points manually.
The group only allows you to put a color and a name, but what if there was another one called module for example that in addition to the same as the group, allows you to put description, other functionality metadata and also draw the wires that connect to components outside the module, that extract each parameter to the right or left edge of the module contour (but without performing any cast operation or whatever the parameters do)? Similar to how you use the Wire Relay, but automatically, inside an advanced group. This way instead of having the spaghetti spread all over the definition, it concentrates between modules, making a plate of haute cuisine spaghetti. If these modules could also be taken as templates, where you start by defining the inputs and outputs, and all the definition inside that module is isolated from the rest, it would help a lot to work in GH with good practices, which at the end of the day is what causes this problem IMO.
It would also be interesting a component that allows to add something like Wire Relay in a column, and through double click collapse all these to a single in/output and expand again with another double click.
Another option would be to give life to the wires using particle systems. If you divide the wires into many particles, also add linear consistency forces and magnetism between all of them, this system tends to minimize the total weight of the wires (not the distance, nor the amount of possible paths, but the amount of tiles you need to pave this floor, that is, the amount of information needed) because they mix with each other and if two nearby wires can share most of its path, they will. The result is branches near the in/outputs and shared wires in the middle of its paths. This would be a very cool way of displaying wires, the organic way, not only because it generates branched shapes, but also because it optimizes (minimizing) the cost of transportation. It’s very easy to implement, give it a try David!