Even reserve lines in SDF have had their patterns 'optimized'.
There are fewer Sun-Sat week on/off patterns than a year ago, and more Wed/Thurs through Tues/Wed patterns. There are also more three-block patterns that have as few as two days off in between. I generally prefer short block reserve, but the patterns are turrible of late.
Bottom folks tend to get VTOR (build-up lines that can include reserve), VTO, Reserve A (midnight-noon duty) or Base Trip Lines. Types of lines available to the bottom 5-10 pilots on SDF-based fleets tends to vary based upon fleet, domicile, and time of year.