Pilots do care about being on time. But we also like to be alive when we get to our destination. Items that may ground the aircraft but do not inherintly threaten the safety of the flight are written on the return leg. Of course I've never done this! An Item like an EPR guage being inop would ground an AC, but you can always set power by the N2.
This Bill of Rights would not affect 135 chartes, or freight companies. There is no more 135 schedualed service. Everything schedualed falls under 121. Freight pilots along with every other pilot will take off in less than ideal situations. But not illegal situations. The first thing a pilot looks out for is himself. I can't explain all the safeguards in the system but there are many such as departure weather minimums, FAA ramp checks for airworthiness, FAA cockpit route checks, and the pilots own common sense. If the plane isn't airworthy I promise it won't go.