Ye thats a good idea I think Jamie. We can drill and tap the floor, change it around all the time. Sometimes having uneven floor and obsticals, somtimes just robot wars style etc.
This is why I wanted other peoples suggestions, Rather than just building it how one person wants it I can get a load of input and see whats most popular and what stands out most.

We would like to try encourage people to have an active weapon, Or somthing a bit unique, a bit more fun rather than just an arena full of boxes pushing each other.