NASA will incorporate a system of springs into its future Ares I rocket to prevent potentially deadly vibrations from shaking the astronauts it carries, agency officials said on Monday.
The days of the Marshal Boys' huge weight margin vanished along with the Apollo boosters they created. Nowadays, it's becoming increasingly evident the original idea of using a single SRB as the first stage was overly optimistic, even with the up-sizing that came with adding an extra segment and (now) another half. And Orion continues to gain weight.
The article itself cites some back-room lobbying being done by at least a few people in the astronaut office who want to ashcan the whole concept and start over with something bigger. Of course, if that happened it'd represent a reboot of a major section of the program, with the concomitant delays and over-runs.