Having few 1/2/3 day trips also creates issues with line construction. If you're above the RLL LIM, I'd have a RLL bid group, or at the very least, keep an eye on the unblockable/unbuildable list. Although I love them, a blank lines and/or RLL lines shouldn't be required to build decent lines. 2 and 3 day trips are my jam, and I don't think I'd bid back to NB until I can regularly hold them on the A side.