I feel like the concern of dogpiles shouldn’t be affected by the new changes. While it may be true that immediately if/when the changes are implemented there are more dogpiles as alliances work through new war strategies, I think for everyone’s joy of the game, we will come back to a similar meta to recently of more mini spheres and 1v1 wars. The changes proposed will take away a significant portion of the blitz advantage that currently dominates wars and allows the blitzed alliance a legitimate chance to fight back. Even in the case of a dogpile, it allows the losing aa to have more control how they want to lose.
While there may be some areas that the new changes may affect the game for the worse, I don’t think that the concern of more dogpiles should be prohibitive.