crappy course, the climb to Arosa isnt that hard, its just ~1,5% between the last 2 climbs and the last is 4k@6,5%(+2k flat), the final stage also has very subpar finish where the riders will bunch up most likely.
Well they could have choosen the road from Chur up to Lenzerheide which features some realy nasty steep parts up to 20 % after Churwalden but i guess Arosa paid more. At least they could afroad sponsoring TDS this year. The matter with Serfaus always seemed a bit strange to me.