>>> Sounds as if my assumption that Varisys would be the still unnamed Nemo
>>> designers won't turn out true.

>> Actually, my assumption just turned out true

> I'd like to express my support for ACube.

Thanks for your insightful contribution to the discussion of Varisys.

> It'd also be nice if ACube came up with a 5121e-based system

ACube already evaluated the MPC5121e:

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(03) Could you please tell us a bit about how and why the ADS5121/Hellrosa/Efika2 was on display by ACube Systems at Pianeta Amiga?

We, as hardware manufacturer, evaluate many different kind of processors. Since this is a reference board we are studying and evaluating it (as we are doing with other processors).
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http://amigaworld.net/modules/newbb/viewtopic.php?topic_id=27164&forum=42#459651

The fact that now there's still no MPC5121e based hardware or announcement thereof by ACube seems to indicate that they rejected the utilization of the MPC5121e.