What if these UTs are upgraded to be more extensive?

Rocketry (chinese): Actual effect: Chu ko nu +2 attack, Scorpions+4 attack. Possible New effect: Chu ko nu, archer line and Scorpions +4 attack.

Logistica (Byzantines) Actual effect: cataphracts deal trample damage and plus+6 additional vs infantry. Possible New effect: cataphracts deal trample damage and 6+ vs infantry, trample damage extended to all stable units.

Stronghold (Celts) Actual effect: castles and towers fire 25% faster Possible New effect: castles, towers and town centres fire 25% faster.

Shatagni (indians) Actual effect: hand cannoners +1 range. Possible New effect: extended to elephant archer.