High Back Cosm Alternative?

Having tried every chair under the sun, I found the Cosm High Back to offer unrivalled comfort, however, after taking delivery of mine I noticed after a handful of days that the noticeably short seat pad was putting pressure on my lumbar region as my legs were uncomfy and at an awkward angle.

I have tried other HM chairs but none came close to the Cosm in terms of comfort - I am wondering if anyone else has experienced the same and can point me in the direction of a Cosm 'rip off' that could potentially provide the same level of comfort, with a longer seat pad?

I appreciate the chair is relatively new so it may be too early for someone to have copied it already, but thought it was worth an ask nonetheless :)