After the Temple was built, sacrifices could not be brought anywhere else. However the Passover sacrifice could be made anywhere within the city of Jerusalem.
After the Temple was destroyed, the rabbis declared that prayers should take the place of sacrifices.
Over the past several years, some rabbis have decided that the Passover sacrifices may resume. This is problematic because even if some Jews bring it, then everyone is required to bring it.
It would present a huge problem. There are now literally millions more Jews than there ever were in Isreal in the Temple's time. If they were to all be required to bring a sacrificial lamb to the City, then the logistics alone would be inconcievable. The smokes would cover the entire city (would smell really good, though). The lambs would have to already be there for the event because of quarantine of importation animals. I can imagine the day of major sacrifices in the ancient days were extremely packed with people, animals and continuous flow of blood and scarificial smoke. I couldn't even begin to imagine the chaos of trying to resume sacrifices in today's political climate. PETA would go berserk. The VEGANS would be up in arms. The PA would be baffeled.......
Isn't the Pesach sacrifice on the order of a peace offering, and meant to be consumed by the offerer's family and guests; in reality, a sanctified feast?