Continuing to stack out towards the left to add things on was tedious.
I once saw a weird guy with about 10 of those side expansions chained to a TI99. One of which was some sort of XT emulator. On the computer he was showing how he could run Microsoft Flight Sim 1.0 about one fourth the speed it ran on the original 4.77mhz XT.
I remember thinking, those are obsolete (have you not heard?) as I went home to my A500 and had a chuckle as I ran FA-18 Interceptor...
That must have been over 20 years ago, and now I'm that guy with the obsolete computer.
%$%$^*