Yes, this sounds good!
A 15cm cube fits in nicely between the Mini Sumo (10cm) and “Standard” 20cm classes. The “cube” also eliminates the unrestricted height some competitions have, which I think is silly anyway… makes it easy to measure, too.
What about a maximum weight parameter, too? 1kg seems reasonably generous. Thoughts?
We were hoping to go with an autonomous 'bot, to encourage more thought in coding etc…
Also: I believe the standard “ring” is a 0.8m (may be 1m) black circle with 2cm white edge and raised off the ground by 5cm (I think) to ensure a clear & proper “out”. We should probably agree on that from the outset, too!