I think, they initially wanted to release it for high powered 486s (66 Mhz or higher), where VGA was really the only option.
The perspective correct texture mapping used a divide per 8 pixels, and this required a high-powered 486.
In the end they more or less dropped 486 support, because they did perspective mapping using the FPU, which allowed for parallel processing of pixel output and the perspective divide on the Pentium (averaging just a few clock cycles per pixel), but caused slower processing on the 486DX which had a much slower FPU.
I still preferred VGA over SVGA on my Pentium 133Mhz, because it was significantly more smooth.