Forget it Ewan.. from the moment a disk gets up to some serious energy levels this robot becomes an unguided/nominaly guided projectile.

Now, as you think a 12kg machine, with a heavy disk on, eating power as wel, that you can escape a dedicated rambot with thesame amount of power invested in the drive as you in drive and weapon...Think again.

And as the power in feathers reaches nominal heavy values, the armour goes up equaly.
The first Hardox armoured feathers are not far away.

Or, every weapon has it time and place.But non are King of the Hill. After Hypnodisk I feared a Spinner dominated RW. But I did my small part, and now we see a Flipper Dominated gamefield in the Mentorn arena.
And Of course, I do not forget Razer as example. Unfortunatly nobody tied a Hydraulic powered weapon in a feather.