Interchangeable noses. Adjustable lengths.
Why not have pistol / revolver molds with a gas check base and a bore rider ogive bored cylindrically through the bottom of the blocks for interchangeable nose plugs (one handle with a set screw for adjustable length).
That way you could have SWC's, round noses, wadcutters, cup points...
Or even a hollow based wadcutter if so desired.
All adjustable for length.
That's exactly what I'd like for .411, .431 and .454.