It's interesting that they had a front 4 of Wilson-Smith-Jordan-Galette for a few plays, who arguably are the best pass rushers the Saints have at the moment, but they weren't able to create any more pass rush than the normal front 4 with natural tackles on the interior of the line.

I still personally like the base 4-3 more than the 3-4, so I'm biased toward keeping that, but if the coaches decide a change to 3-4 would be beneficial to their future success - I'd be OK with the switch.