It can become quite confusing and irksome to find what augmentation is required for a schematic. I think it'd be better to have the schematic viewable at the station but greyed out (or any other color) if the proper augmentation isn't present. This view could also show which augmentation is required and would allow you to place one down through the station. This'd also be beneficial aesthetically, being able to chose the proper themed augmentation for the station.
The only schimatics that should show as locked are those you have not unlocked.