One other thing we also have to remember when thinking of the diminished records after the 2013-14 season. The league was greatly upgraded at the conclusion of that season.
Maryland and RU joined.
Barnes Arrico started to get traction at Mich., OSU had Kelsey Michell and was dominant over her career there from 2014-18.
The conference started to get better each year to be able to match the more intense playing style that we and Md brought. The top half of the conf. was able to recruit better once we and Md came in, IMO. Maybe I should say, the top and mid-level teams (Northwestern, Indiana come to mind).
OSU, Iowa(always tough), PSU, Purdue(either really good or just so-so), and MichSt.(solid under Suzy M.) were the only other schools that were formidable opponents in the Big 10 before we got in.
The other schools seemed to raise their level around the time PSU slid. That also had to play some role in the slide. Especially with Coquese having problems keeping her best players there at PSU.