Do we really need for our keeps in Cyrodiil to continue undergo a metamorphosis as they level up as though we are all living through the introduction to Game of Thrones together? Every time a keep that we are defending/capturing levels up I personally get a load-screen as do most of our group, and enemy combatants, and naturally some of our friends lag out altogether. Likewise when the keep "flips" the accompanying loading screen can be counted on to signal success, or failure to defend or capture.
Admittedly, if game performance in ESO was where we all wish it was, this animation might be pretty cool - in my opinion. However, I think for most (all) of us performance is not at all where we want it to be, and removing a cosmetic animation like this one, which clearly adversely impacts many of us might result in an immediate benefit. We have after all seen changes made to the keeps previously such as the removal of the destructible ceilings of the cathedral style keeps, which I think had a much less perceptible impact on game performance.