Well, my observation is that perhaps better than 90% of Catholics are already sedevacanists practically speaking. The (conciliar) papacy has basically been reduced to irrevelance and the current occupant Francis working hard to put the final nails in that coffin. I mean nobody cares or listens to the conciliar 'popes' anyways, unless it suites them. When benedict issued the motu proprio conservatives cheered, then went back to ignoring him. With francis the progressives cheer but ignore him anyways. Other then perhaps doing a bit of photo ops and maybe visiting some churches (and some ecuмenical get togethers) nobody seems to be terribly worried about what he does. Even the SSPX has set up their 'extraordinary magisterium' to parse through and inform us faithful if anything of relevance happens.