That would completely ruin certain strategies. You might send a fake with hero and someone would open your hero profile and notice he's on 100 points on def and res, which would potentially indicate that as a fake attack, thus ruling out the option of it being a potential threat.
The other issue is, you can't tell apart Tier 1, 2 and 3 shield, map, standard, pennant, horn and pouch just by looking at them, so making enemies see the difference there would also be a bit annoying. Not a life changer, but still not really something you want the others to see.
Sure one could change the point distribution last second on the way, but that's not really a viable option to keep switching and wasting books just for fake attacks.
Thats how Travian makes a fortune. When we exchange gold for silver. Exchanging silver for Gold is stupid.