How about even more visual compactness like:
MIGHT ARMORING 22
RESOLVE ARMORING 22 (+) (+)
PATRON ARMORING 22 (+)
GUARDIAN ARMORING 22 (+) (+)
COMMANDO ARMORING 22
FORCE WEILDER ARMORING 22 (+)
The upgraded versions become blue/purple/ect dots appended to the end of the original schematic. Full name and details available on mouseover.