I love Screeps and look forward to a seasonal server and any other improvement that allow new players to get into the game.
Just today, a couple of hours after having a novice area protection lifted (Shard3), a dominating and aggressive player, wiped me out with 2 power creeps. From what I've been able to determine, he is a power player that can't realistically expand any further because of shard3's CPU limit, but he can send out powerful creeps to wipe out new players that claim rooms in the area. I watched as those two creeps went from room to room taking out the spawn in each room so that each player could not rebuild their room. The creeps had enough healing power that even rooms with 6 towers could not damage them.
Just seems bad for business $$$$ that a player like that can stockpile resources waiting for the novice area protection to be lifted, then proceed to destroy rooms being built by new players. The new players were dead men walking the moment they spawned into the game, just didn't find out until the novice protection was lifted. In this specific case, new players are intentionally being used as target practice. No new player is going to purchase a mmo subscription $$$ to be used as target practice.
I like the idea of seasonal server because it would significantly reduce he problem I have just experienced. At least everyone would be starting about the same time, so there would not be power players simply camping out, stockpiling resources, then playing target practice with new players.