This would be great to add! I've been sitting on two FusionIO PX600 cards for a year from an old server build but they don't appear as drives when I installed them. Although they may be a little older and not nvme standard, they run well and are still very fast and much better than sata ssd's.
Many times they can be found on ebay for a good price. For people who don't have heavy storage capacity needs, these cards are a godsend if they can be used as drives in the disk array. Great speed, capacity, price, and even better, no power/sata cables!
I truly hope this gets implemented. There are a number of posts I find from users asking about these cards through a simple Google search. It was always a dead end and they eventually give up. A little disheartening considering the potential of these cards.