  Motivated by the observation of light surface states in SmB6, we examine the
effects of surface Kondo breakdown in topological Kondo insulators. We present
both numerical and analytic results which show that the decoupling of the
localized moments at the surface disturbs the compensation between light and
heavy electrons and dopes the Dirac cone. Dispersion of these uncompensated
surface states are dominated by inter-site hopping, which leads to a much
lighter quasiparticles. These surface states are also highly durable against
the effects of surface magnetism and decreasing thickness of the sample.
