Lamerina, it's only this round that is over ;) it wasn't the first one either.
Strategus round 5 starts probably pretty soon and as usual the devs will probably change the strat formula a bit.
However changing to shorter spawn time might irreversibly throw the balance in favor of the defenders. Thinking back at bith HRE and the greys piling up there own bodies under the walls of the untakeable castles of their opponents, I don't think that's what we want.. ;)
