Sounds like it will be the same as Watford then. We were in the 3rd row and stood. If you expressed a preference for the back then maybe the club will move your seats if and when we get the next tier.
Nah - they've already said that they won't be moving fans who have bought seats already (except to fill up singles).
The interesting thing is that I wonder how many fans have held off buying until the middle (&/or upper) tier is opened. Except...unless they sell the lower tier, they won't be opening further tiers!