Gotta admit that my personal view is that arch can be a pain in the arse, and kinda spoils the map, one sentry is fine, but more than this on such a narrow choke is nearly impossible to counter. an ubered demo cant get to them, because of the knockback they run into. as i said one is ok and destroyable. as for nerfing it, i dunno, both teams are able to build there, so its equal and gives a challange to teams. they need to have two ubers at teh same time or at least a well coordinated push to advance, something which pubs are notoriously bad at doing.
One way of countering is to have a qf med and uber med pop on teh demo at the same time. or a bonked scout drawing fire from the sentry, then uber in.
