I made patches to port FE12’s Lunatic Reverse rules to FE7 and FE8. These basically give every enemy Vantage+; they will always attack first, even on player phase, if they are able to counter.
The FE7 patch also enables all difficulty options from the get-go, because nobody wants to play Lyn Normal again.
People interested in building skill systems are welcome to borrow and adjust this code to get Vantage running.
Patches here:
http://www.mediafire.com/file/17a7qzs06cddq77/fe7_reverse_1.0.ups
http://www.mediafire.com/file/sy9v3ynapkqyicv/fe8_reverse_1.0.ups
Source for the interested:
FE7: http://pastebin.com/0ceAV0d0
FE8: http://pastebin.com/8WZazyrU