The line question seems to come up a lot so I thought I'd make this little table indicating how long each base takes to hold a line (as of October 2018).
SAP = Schedule Adjustment Period, lineholders get 2 rounds of add/drop/swap opportunities, after that, the leftover trips are built into lines (if able) and given to those that did not receive a line in the initial run of bids.
Post-SAP lines are not broken down by composite vs full line, simply shows if someone got at least 1 trip after SAP.
The original base thread has also gotten way off topic and hasn't been updated in months so I thought I'd take a stab at that too.