Currently, you can equip crabs with equipment and this equipment will be used for when the crabs are used in Arena but also in Mining/Looting.
Using equipment in Arena is a must, but when you use your same Arena top notch crabs in Mining and Looting, the equipment will lose points; unless you remove your equipment for these crabs. Which you should not otherwise they will be removed for Arena too!
And loosing equipment points will lead to more unecessary repairs.
What I am suggesting would be a have a way to separate equipments usage for your three main Arena crabs with most expensive equipments you don’t want to lose points for in Mining/looting.