Never understood how enemies can eat Ogris, Bramma, or Envoy explosions and not get turned into chunks. Fictional universe or not, I still find it difficult to believe that an equivalent of a missile or rocket can't turn a Grineer or Corpus footsoldiers into red paste on impact.
If you want Blast to be even blastier, it's gotta hit WAY harder than it currently does ingame. If I were to buff Blast as a status, I'd give it a % chance to instakill per proc for cannon fodder mobs and % chance per proc to deal a blast-weighted instance of true damage for special enemy-types like Eximus, heavies, and bosses.