I experiment with WB's all the time, and will say they are fine for the first layer, though I think they do hit t-junctions less often than they could/should. The issue I think WB's suffer the most from is their programming which apparently must be destroy all first layer compartments before going to a second layer. That basically means WB's are pointless (except as a starting point bringing EQ's or jumps to get core) to bring on all those multicompartment bases if the intention is to core because it will take upwards to 12 WB's at the very very least.
As an example, take a side of a base... The design is a large central compartment with two compartments at each end enclosing a 3x3 structure. Just looking at the base, it should take 4 WB's to get to an inner wall; break the wall right in the center of the large compartment, then drop the next two to hit the inner wall. But what ends up happening is that after the central wall is broken WB's placed near the hole will run to the outer compartments despite that being a longer distance than hitting the inner wall of the central compartment. Okay.... so that is 6 WB's instead of 4, not really that big of a deal. So the central compartment and the end compartments are open, so dropping 2 more WB's will then go for that inner wall...... nada, what ends up happening is the WB's will go inside the hole and then break an inner piece of those side sections. It makes no sense why they do that.




