VEX seems to be shifting away from all of the low strength options, and leaning more into the high strength accessories. Gears, wheels, and more are receiving the “low strength” → “high strength” makeover. It’s unlikely that these gear sizes will receive low strength options.
VEX released high strength gears after they released the low strength gears, then made a V2 of the said high strength gears, not revamping the low strength gears at all. This, as well as all of the following product changes recently, have led me to believe that VEX is encouraging everything high strength. Following this theme, it seems unlikely that VEX will release low strength gears of the 24, 48, and 72 gears.