Honestly, not in love with the design of the build system at first glance. Would recommend Actobotics or goBILDA (with Actobotics being better imo). Would also encourage exploring custom built robots for CENTERSTAGE to learn more about the engineering design process that goes into any machine. Definitely am excited to see another build system enter the market to hopefully create more competition and strive for innovation.
The servos are screwed to the structure using 10-32 screws. They have integrated mounting flanges for easy assembly. You can see more details on the Programmable Servos product page: www.andymark.com/products/programmable-servos
While that isn't a part of this design, we have no doubt that in the process of iterating on and testing changes to this robot teams will be able to pickup and score two pixels.
One key idea on this robot build was to push simplicity. The expectation is that it could do 70-80% of the game tasks but leave plenty of room for teams to improve and integrate their own designs to accomplish that last 20-30%.