It's a bit strange how you're judging, gentlemen. Whether something is a block or not often depends on the army you're facing. For Shaktii with 50 troglodytes, anything is a block, but with 150+ – nothing is a block. So, the long-standing formulation "with losses of more than half the army" is absolutely sufficient.
Added 5 minutes later
was there a vote about the Grail? (I would allow digging with 111 on the CIS server)
and the topic is mainly created to improve the interpretation of the existing rules (but you are suggesting)