If they re-issued the Stanton 881, they'd almost certainly have to change it... the tracking force is so low it might be hard to match to many modern arms. I don't think anyone makes stereohedron styli any more, so it would probably have to be a current production Namiki shape of some sort.
Would it still be an 881S if all these changes were made?
From personal experience, tracking force of this device was best around 1.25g. 1.5 could be accommodated without problems. I always used the brush, which added 1 gram, supposed to be counteracted by the brush elasticity.
Those were the days of the 'tracking wars'. Empire was advertising 0.75 g tracking on some of their carts, but no one could go that low in real life. Some high-end Shures did track well at 1 gram, especially ones having the damped stabilizer brush, which helped a lot. The Stanton/Pickering brush was not damped, and therefore didn't have the same beneficial effect as the Shure.
Stereohedron specs were somewhere in the Shibata range. I don't know who made Stanton styli, or whether they were ground in house. Adamant-Namiki would likely be the main source for line contact styli and custom cantilevers. I'm pretty sure that Shure sourced their Micro-Ridge from Adamant--looks like the MicroLine is similar (if not the same) as the Audio-Technica MicroRidge, and Jico SAS. On the Adamant site they show three different Shibata cuts. My guess is that they will grind whatever the customer wants. Ortofon has a handful of similar line-contact diamonds.
I know that Stanton advertised a Stereohedron I and a II. Not sure the difference. Toward the end of the company's life (the horrible Gibson years) Stanton was calling their 2x7 elliptical diamond a Stereohedron. It was just a name for them. By that time the company had become just another Gibson joke.
Below is from a chart I have:
Shure Micro Line............2.5 x 75 um
AT Micro Ridge..............3.8 x 75 um
Van den Hul.....................4 x 70 um
Ortofon Fritz Geiger....5 x 70 um
Ortofon Replicant.........5x100
Jico SAS...............................2.5 x 75 um