1. Steal science sounds nice.

2. Btw, I think learn attacks is a valid way of getting science. Current science system is fair I think. Warring kingdoms will find other warring kingdoms more or less same amount of bpa. Land/NW whore will find other Land/NW whore more or less science same amount of bpa. And both categories cares nothing about the other categories.

3. Sage is also ok this age, they have sciences boost and that's it. Nothing else. We can make science attack on them and gain huge science, and the sages doesn't hurt as much (but still hurts) because the % loss aren't that much.

Conclusion, I think current science system is already ok. I vote for no change.