[Request] Controllable variable length underground belt

[Torr1978]

I'm just throwing this out into the ether in the hopes that someone far smarter than myself is able to create the idea (and possibly balance it).

I would like underground belts to act differently in the follow ways:
1 - The inlet item is clickable so they open like a chest
2 - the slots in the chest are more similar to a fuel slot in a tank of car, but they determine how far the belt will reach underground before it's exit point.

Wishful thinking features
3 - A way for the player to enter the underground belt area and collect items off the belt (similar to the way Factorissimo puts you into a building).
4 - When the chest like state is open some numbers are displayed telling you how far the belt could reach and a second number telling how far it actually does reach (this would only matter if the out is in water or under a building.
5 - When the chest like state is open their are fuel slots and inventory slots, like a train/car, So you can put belts into the fuel slots and take items off the belts or put them on the belts in the actual inventory slots.

Quality checks
A - I think that there might need to be a check to see if the output is coming up in a building and is dialed back until there is a valid exit point, maybe and exit point and the next adjacent tile is open.
B - The time delay for an item to enter one end, travel the proper amount of distance, and come out the other end.

Question about balance
Should the mod allow the mixing and matching of belts when building the length of the underground belt?

Why I think someone smarter than myself would be able to accomplish this.
The loader mod exists and factorissimo mod exists.

As a possible way of doing this, I think it would be interesting if the "in" and "out" acted like factorissimo and there was somewhere in the world the actual belts moving the items the proper amount of distance.


Thanks for listening.

If you love this idea and wish I would just build it, I'm sorry that I'm not good enough with LUA or Modding of Factorio to build it myself, nor do I have the time (let's be honest, modding would cut into my actual play time which I don't feel like I get enough of as it is).

~ Torr

EDIT: Corrected subject line to be more in line with the rest of this forums conventions.