I liked the Marlin 39A, have one of 1971 vintage.
I honestly think price point would be a big deal for many on a 39a comeback as far as sales numbers and popularity.
Henry is scratching a lot of folks .22lr lever gun itch and doing so starting in the mid $350 range so fun and affordable and most reports saying pretty good accuracy and reliability.
Henry also offers a lifetime warranty on their forearms and most reports their customer service is top notch.
The biggest gripes I hear about the Henry's is people complaining about the painted pot metal receiver covers rather than being a blued steel part which most people buying the gun would gladly pay extra for even if it were offered a slightly higher model and the base model stayed as is.
The 39a would need to be somewhat competitive price wise to garner a large market share in that arena I believe.