Yeah, but wide avenues suck for pedestrians. No thanks. I even complain about Congress being too wide sometimes.
Some of the corridors could go. I'd at least keep one along I-35, the two corridors between 12th & 15th. I know it's been discussed before about that one eventually going away if they lower I-35 or even tunnel it, but let's say they build a park near there or a nice avenue which could be landscaped and provide a view. Some of the views farther south along the interstate could go. Heck, the best view there ever was the one along the interstate which is gone now (near Riverside) with the construction of the Omni.
I would however strongly suggest keeping the ones that double up on themselves. For instance, there's some from the southwest that if preserved would protect 4 views in one narrow path. Those 4 corridors also quickly jet outside of downtown, so few highrise projects would be affected.
Also, take a look at the map. A few of the corridors cross over parks. Some of these, Waterloo Park and Woolridge Square, are very near the Capitol. If it's determined that a few of those corridors should go, then it would at least be nice to keep the corridor intact at least from those parks.
I could also see doing away with the Lamar one only if they kept it intact enough to be seen from the pedestrian bridge. That would open up a good number of blocks to taller development, but would still keep the dome visible from that area, and from a more pedestrian friendly parklike setting (the pedestrian bridge).