From an economic perspective, it makes sense to unbundle goods/services so people only pay for the aspects they want. This goes awry, however, when companies do not price things transparently (e.g., make it seem like "coach airfare" is available for $x, when in fact that is the price for "sub-coach airfare"). It's also not optimal when employers' travel policies haven't yet caught up, and your required to book a class of travel that is demonstrably less appropriate than what was previously reimbursable (e.g., you can't pick a seat and are therefore more likely to get bumped if the flight was overbooked).
That reminds me of some Dilbert thing from a few decades ago, labeling competing airline reward programs as a "Confuseopoly".