You can make the base any size you'd like and be as creative as you wish. But be careful not to raise it above a safe and comfortable level.
My main table saw is a Rockwell Unisaw with factory enclosed base beneath which I've added an inverted U-shaped sub-base of 2x4, open near the operator, into which slides a shallow wooden drawer/sawdust catcher.
The operator-right-hand table extension I custom made from aluminum square bar, an old table saw top and some parts from the factory table extension kit, such that it receives my inverted 3-1/2 hp Stanley router. The Unifence then serves both saw and router.
On the operator-left side is the rail for a sliding table.
A solid-core door forms a permanent back-table and is supported at the saw and table extension by a heavy angle, and at the other long edge by a 2x4 leg and a shelf unit. This table also functions as a workbench with flush-mounted vise. It is topped with 1/4" Masonite into which I have routed slots to clear the tracks on the saw sled and miter gauge.
Photo from back-table perspective shows how I've chosen to organize

the space I've used. Large drawer unit and rollaway cabinet.