I echo your sentiment, O tubular dude.
The modifications I suggested could only have been built into the shuttle, mind - and added about three tonnes of mass to the total weight. The
balutes are untested technology (a distant cousin was used to bring Pathfinder to a bounce-down) and the escape system would have added about two
years of testing to the shuttle program.
By contrast, it would have been impossible to implement such a technology on a capsule or a mini-shuttle. Just too darn small. What we have in the
space shuttle is neither fish nor fowl, able to do all things but none of them expertly.
Now, having said that, if we look at both accidents, they were caused directly or indirectly by the
launch system, a faulty O-ring for
Challenger's SRBs and a big chunk of foam that hit the wrong place for Columbia. NASA's other shuttle proposals included winged, fly-back first
stages - and of course, a reduced payload capacity because of decreased efficiency.
A marvel of 1970s technology, the shuttle has served us well despite its failures. It has been our first true spaceship. But the time has come to put
them in the museums where they belong. Perhaps the likes of Burt Rutan with his X-Prize entry will be the wave of future.
Scaled Composites