2. They nerfed TVP because people were upset about it dramatically unbalancing PvP. Your suggested GB would basically do the same thing, just in reverse. They're not going to make a new GB based on the exact same concept (admittedly in reverse) that they had to scramble to get rid of only a few months ago.
The [main] reasons TVP was unbalanced is because
(1) Defence only has two defence exclusive GBs. Attack has four exclusive GBs without Virgo
(2) The defence GBs are in LMA and Colonial Age. The attack ones are in Bronze, EMA, LMA and OF.
The stat raising GBs are in later ages on the defence GBs while being the exact same stats as the attack GBs. This means it’ll always be considerably more expensive to build up defence GBs for the exact same stat boosts then it is to build up for attacking armies
I agree a wiping out of half the army is a bad idea in PvP because we only have 1 wave we can place. But it’d be better on defence then for attackers. A GB that takes 2 units of the attacker would be balanced as a defence exclusive as attack already has the kraken, cheaper lvling and more GBs
