Not a silly question actually.

There's really clever ways you can get down to scratch that space-saving itch; I'm not knowledgeable about it either (I'm just really bad when it comes to analog signals) but if you really, really needed to shave off even more stuff; I reckon that the video console driver could possibly be reduced to something far more esoteric (That'd need signal processing to get tangible output of). But at that point, just use UART (Which is simple-enough already and should not really starve you out of much memory).

Well, when I say resources in this case, I mean UART bandwidth and the overhead of synchronizing that for output.... not so much memory itself (well, unless the overhead of the hackery for whatever 32x does as far as VRAM is worse, not sure if it's another tile engine or one just bangs bits...)