Maybe this little beauty will take their place. https://www.youtube.com/watch?v=V2bwevLgeRc
Combine that and the ringless design where they use air pumped through the cylinder into a system of ports that cause a vortex to seal in the combustion gasses and no two stroke oil is needed to lubricate the moving part or bore. Except they would need to provide some oil for the bearings and spline that transfers the crank energy to the flywheel or output gear.