I were longing for a PvP like this, that require tactics and is not a bloody arena only.

If a group have topped 'old' PvP and want make the 'new' PvP together, they just have to agree to same FC all together. You can change FC so I do not see anything bad. Looks like you wanted all the good things without pay anything in exchange.

Until today on my new FC mates, asking me what FC is 'better', I simply reply to choose what they like the most. After the patch, I will just add that our FC will go battle at the given GC side we choose as FC. Me too will have to switch FC, but don't make a big deal from it.