So... What is it.
Like Legotaz said - poor description.
Ok if your searching for idea, i will give you one.
Dytech... take it back if you can or redo one like it.
Bobs mod is way too complex (already played it 100+ hours but the factory itself is complex to create) What i loved about Dytech it was simple but yet touched everything.
From Big Chest to Mk5 mining Drill to new enemies that were harder.
I love this game - but its too easy with vanilla factorio. Need to make it harder.
Hekkk Flyers....
Nidus Canal from starcraft. Should be possible to use the same codding has conveyor belt but for biters (dont know how to program stuff, just know could use that code to pass entities)
Dytech had most of the factory machines to mk5. i would suppose start with that.
good luck