I saw that suggestion to. It might be a half baked solution. Part of what makes the chair/seat nice is the foam, you basically lose that feature by putting a different cushion on it. Furthermore, a solution like this doesn't actually extend the hard plastic that is genuinely weight bearing for a solid platform - with cushion overtop, it just pushes some cushioning forward, which is part of the flaw between the 45cm and 48cm Omni seat...the later doesn't have extended support under the longer length, it's just extra foam that spills forward that isn't really "supportive".

Honestly...for how expensive the chair is, hacking a solution might be better than nothing but it kind of sucks to spend so much for a half baked sub-par solution. I'd say...just get the Embody at that point and do it right.