New DCCRPG Houserule

So after playing through the entrance to my modification of Sinister Secret of Saltmarsh, the boys and I were talking on the way home, and through that discussion, I came up with a modification to the non-proficient weapon rules. (Though I re-read the rules and realized half of the rule was already done...too many funnels without penalty.)

Alternate Improvised Weapons/Non-proficiency Rules
Attacks with improvised weapons do not use a lower die on the dice chain but still may not score a critical however, they so fumble on a 1 OR 2, and increase the die used in the dice chain, so the fumble die is a bit more spectacular.

I haven't play tested these rules yet, let me know if you try them and they work for you.