New mechanic is interesting, but it feels a little... Lackluster? It doesn't really provide too much of an advantage seemingly. At least, not yet. When guilds actually choose to use it how I think it should be used(Defenders abusing the hard corners that exist when the blocks are up) then it will make for an interesting mechanic.

I think something that could help would be to have a few blocks on the sides of the middle, too.