In spite of what people believe today, cartridges were not (and have never been) obsolete technology ... The fact is if you could produce a cost-effective flash based (the modern equilivalent to a cartridge) the benefits would far outweigh the problems. The problems with cartridges on the N64 was Nintendo was building a system with the idea of low load times and seamless worlds when the industry was focused on full motion video, and when the N64 was released represented the largest gap capacity/cost between an optical disk (CD) and a memory format (memory cartridge). Trust me, within 2 years we will have flash memory which challenges Blu-Ray for capacity and with in 5 years memory of that size will be inexpensive enough to deliver content on it ...