To be honest, if someone were to make something new, what would be most exciting to me is a new stem material that will make fans of vulcanite (softness) and acrylic (durability/ease of maintenance) both happy. I don't think you can get a more ideal bowl material than meer, clay or briar.
Like if you can get the best of both worlds in a stem and everyone use it, then you won't need to forgo a pipe you otherwise like because you don't like the stem material, or have custom stems made (seriously debating one of those Mike Bay black rusticated pipes with bamboo shank and smooth rim, if he makes one in a slightly bent apple shape, and just sending it to someone else to have an acrylic stem made for it; I already reached out to Mike Bay about it and he said he only has/does vulcanite).
Like if you can get the best of both worlds in a stem and everyone use it, then you won't need to forgo a pipe you otherwise like because you don't like the stem material, or have custom stems made (seriously debating one of those Mike Bay black rusticated pipes with bamboo shank and smooth rim, if he makes one in a slightly bent apple shape, and just sending it to someone else to have an acrylic stem made for it; I already reached out to Mike Bay about it and he said he only has/does vulcanite).