Track clan war wins in addition to war stars.
In many clans I see players attacking for the maximum number of stars. You see clans with 30 members, but only 10 that play. They are only attacking to get 6 stars from the weak in war and not win. I would like to see a running total that shows the number of wars that you participated in that were wins (regardless of clan). This would help promote the clan working together and reward winners not just people who attacker allot weaker players in war. It could be an achievement participate in (x) winning clan wars? Or display war win ratio that way the clan wars impact stats. Extreme example, but a player with 10,000 stars could be seen as a star grabber if there win ratio was but 10%. That way the win number is tracked and able to be seen.