Perhaps..

The issue with a guaranteed "job" as with a flow is that many individuals that would never cut it in an 121 could never be hired to work 135....it might be due to history of some type, or just personality....but the interview process would have to match the partners.
The fact that the airlines with agreements have a process to be accepted to them for "flow" or interview with milestones you must meet makes the milestones effectively a long interview....

Yes, going straight to a legacy is not likely, but to a LCC is common, as is freight company to fly a 767....or simply go to UPS, ALSO on the list....think most would consider a job at UPS to be a success...
Different lifestyle, and different upgrade path.... sometimes you don't end up with the path or the end you though...many people like the lifestyle, then stay, or even fly corporate. Not all people's final goal is a "legacy" carrier....and depending on when you are hired in relation to growth and retirements, a legacy job MIGHT result in decades of stagnation....ask a United guy from the 90's...or the guys from defunct carrier's that did not get bought.... starting over....
Personally I LIKE getting my hotel points, and having a rental car/crew car more often than not, and having most weekends off....and alternating one week and two weeks off, a vacation, and avoiding the BS of many places.
Is it perfect, no. However, it is a choice that should be considered and might be a good option for many IMHO.
I ADVOCATE that anybody consider ALL options, and the meat grinder of the regionals are not everyone's "cup of tea", nor is the lifestyle with the typical commute.