The decisive factor is following: the easier and faster it is, the better. Being as popular as they are comes with certain costs of course, one of which is that they receive some negative feedback from some of their disgruntled traders. I found your website by the use of Google at the same time as looking for a related subject, your website got here up. New fungal diseases keep appearing, affecting organisms from bees and corals to sea otters.
The FIFO is based on the Versatile FIFO also available from OpenCores.