Why shouldn't you use walls around blocks? You use walls around blocks in BB too, and PI has the same movement there. There are similar tricks because PI has the same matching like in BB2. I think it deserves to be official.
The level is OK but it does not deserve to be offical. If you build walls around the blocks and don't use PI specifics devices as the mentioned ones you have a BB2 level!
I don't really see the link with the BB2 levels, but there are certainly some tricks involved, which you certainly need in this game. You don't have to use forcefield and smartwalltricks only. A newby who starts playing officials on PI also has to learn the simple tricks.
What I mean is that they are LIKE BB2 levels. There are at least similar levels at BB2. These ABC levels don't use the possibilities or the concepts of Puzzle it. Therefor I desagree with their official status.