The current arenas just arent strong enough to assuredly and certainly contain debris from spinning weapons. It can all be found in the rules and guidelines of the FRA for the roboteers and for the event organisers. See the FRA homepage for these documents. They make for interesting reading.

Robots like Hypnodisc and Pussycat cant compete in the current arenas because they are not allowed to as per the rules. They can enter the fights, but with weapons disabled. Its a pity, but that is the way things are for the moment.

The event organisers are working on better stronger arenas but that involves quite a lot of money, time, and (heavy) materials. And that is why -sadly- building robots with spinning weapons is currently discouraged.

Im not saying your design is a bad one. Its just that as Safety Officer this particular roboteerette is overwhelmingly curious about where you will put the removable link in a robot that frankly bristles with weapons. Im not saying I dislike your design, to tell you the truth when I saw it for a moment I thought it was Christmas time and Santa does exist, but there are practical considerations.