Imagine the following scenario:
You see a heavily armored enemy fighter slowly walking up to the bridge. There doesn't look to be any supporting characters in sight. With your team in perfect defensive position you click end turn.
The next turn, the fighter pulls out a dagger, cloak & daggers into your midst, vaults over the head of your wizard, disappears into thin air and cuts him to pieces with a mortal blow. Oh, adrenaline! Backstabs X N, your ranger is down. *Poof* he uses tactical retreat and enters sneaking mode. Turns out it's actually a scoundrel/huntsman hybrid with glasscannon, warlord and backstabber. The sword & armor is just for show. You concede the match. GG.
So a boring turtle game was averted. I don't see the problem.
