Frank
The DRS of tracks shouldn't be too uniform though. Managing should adapt to a track and not all tracks adapted to one type of managing, so as long as one car can manage to pass and not more than 2-3 fly by easily DRS is in acceptable strength. A no to 2+ DRS zones from me, with exception of some tracks with still stronger dirty air it's often hard enough to make an escape and gain that second using the remaining round and reducing that greatly by additional DRS zones it'd be impossible but for cases of a huge advantage in pace, weight and tyre. It'd be OK on like 3 tracks or so, because again variety, but not the main bulk.
Exactly, more drs zones will mean no chance to escape the drs train. It usually takes hard work to just open up the 1 sec gap in one lap.