Categories would display the total cost of their items
In parentheses it would display the cost of the current category and previous (ordered right and down)
For optional items, right clicking will give the option to exclude it from the price (in yellow)
For components, buying an item that...
The ability to search public builds by name is definitely needed
Also, the option to tag a build as DPS, support, etc and the ability to browse for public builds by tag?
As Mo is the one punching and moving while Krill is the one shooting, it should be an interesting and unique passive that improves their melee capability