Horrible decision.
The new damage deck was made for a reason and letting people tailor their lists to a specific damagedeck is imo not a good or optimal solution. Critical hits should be horrible in the majority of the instances.
Events I will TO will always enforce use of the new Damage Deck.
Best to tell them beforehand. I got chewed out for bringing the new damage deck, even though the TO changes the rules for time and round ending (not allowed to finish the round when time's called out, for example), and he doesn't post this in the FB page. Heck, he wasn't even familiar with the differences between the new and old...
I allways post all rules beforehand, but thanks for the tip