Know what I miss? HIMEM, and knowing if a program needs LOEMS or HIEMS. Remember what a super-bi*ch it was trying to get Falcon 3 to run on 8 megs of ram, with 4 megs of EMS in the background?
I remember spending hours tweaking the config.sys and the autoexec.bat sequencing, with rearranging the load sequences so we'd have just enough memory left over to load the sound drivers.
Ah, memories.