DeletedUser31397
This building and its nerf have always been curious to me. Even with pvp it's not worth the space (and definitely not the investment) in the current state of the game. I guess this is a prime example of a "worthless" but "fun" great building. The only reason I can think of to remove it from pvp is to prevent complaints from those who have wasted half their city space on defense. I can't imagine anyone who has spent that much space on defense is serious about the game in the first place though. What a conundrum!
Simple. City defense is an element to this game; the Virgo Project completely destroys that element if you include PvP so I praise Inno for looking out for these issues. And I'm not sure why you think players that invest in city defense are not serious about the game. There are players that actually value PvP over other facets of the game (me being one of them).