So, I thought of a small thing. Since you can research stuff like faster clock speeds and models of CPUs, why not make your own research once you get done with all the upgrades you can research? For example, better architecture, faster clock speeds, cores, etc. But have limitations. (i.e. no faster than 120MHz clock speed, no more than 4 cores, etc.) So with that, the game can be longer than the regular time limit from 1970 to 2006.