My reasoning is: 1) players get no rewards when playing Private Matches; 2) the stock mech games that are organized are a lot of fun and offer a welcome respite from the meta builds; 3) every mech you buy comes stock until you upgrade it; 4) you would still need to own the mech to run it stock (unless you're running a trial mech); 5) buying new mechs just to keep them stock gets expensive and clutters your mechbays (yes, I realize this may be intentional to be a cbill sink and a revenue generator from mech bay purchases).
Edited by MightyMeatShield, 25 June 2014 - 10:59 PM.