What is the point in team wars regardless of all the changes in war coins value/monster?
Will it make your account better over time? Yes, but dont forget there are a lot of exactly same players like you, also doing same team wars, also getting same coins, also buying same monsters and also ranking them up in same way.
Will it take you sometimes to the "elites"? Nope, because there are no elites, there is just bunch of players with maxed monsters and runes, thats it.
No matter if they invested real money or exploited team shop earlier.
May be some day you will be one of them, one of many, thats it.
Will your team be in top 1/top 5/top 10/top "any number here" sometimes? May be yes and you will hang there forever, among exactly same teams with exactly same players just with different names.
There is no any progress downgrade game mechanics deployed, therefore there is no much sense in wars/pvp at all apart of satisfying your ego in crashing players within weaker teams. Do this once, twice, 100 times - ok may be you still get pleasure. Do it for months/years?? Exactly same thing? Really worth your time?
There is no way to progress above certain level.
There is no way to regress either.
Therefore there is no real competition.