Antialias would be a great thing to have in Draft for a rich user-experience and I can say this for having seen this in a program called Ashlar-Vellum long time back in 1998.
The program is still around and has evolved into 3D but 15 years back and compared to ACAD the drawings stood out for their smooth appearance. Even today, their gallery has sample drawings which appear distinct from other CAD packages.
The only problem back then was the limited hardware capability which was not modern enough to support anti-alising in Draft. But there should not be any problems in 2015.
This product by-the-way was also the first to introduce what we call Intellisketch or point-snapping like mid-point, end-points, etc. and its impact on the CAD world was same as PTC pioneered parametric and Siemens Solid Edge's invention of Synchronous Technology.