The ramps actually fold out from an upright position, and then if you look closely there’s that single pneumatic tube putting 120 PSI worth of force to lift our 2002 national championship bot and the amazing 2005 tetra placing bot. The tube, after the bots go up the ramp, flip up and then are extended, doubling as a stopper in case the robots go nuts.
As far as an arm is concerned: we considered it, and in fact it was in the original plans, but #1. we had to be sure the ramps were rigid enough to get the robots up at least 1 foot (2*30==60 points which can only be beat by a row of 6 tubes, or some ridiculous grid on one side of the rack). That led to #2. Weight issues. Lastly, #3. Simplicity for us was very necessary this year.
PS: Sorry about the quality, its from a phone.