Mesh:setVertices offers a mechanism because
Mesh:setVertex cannot add or remove vertices. Adding the ability to add and remove vertices to
setVertex could make
setVertices should exist, I think
getVertices should also exist, because there are rarely setters without getters, and when there are it is for a good reason.
getVertices might be useful for copying Meshes, if that's something someone would want to do:
love.graphics.newMesh(Mesh:getVertices(), Mesh:getImage(), Mesh:getDrawMode())