They talked about Remote Control, Truth or Consequences, 21 (I thought they owned had the 2000 version?), Studs, etc.
Price is Right is a show that has been on the air continuously for 34 years, and has an extremely strong following among college students, one of the demos GSN wants to attract in the first place. NO way GSN leaves it out. NO way. (And if they do, people genuinely need to be FIRED, as someone simply failed, outright, to do their job). Wheel is...well...Wheel. What's My Line has aired on the network longer than the significant majority of other shows (Only 2 G-T shows, FF and MG, have aired on GSN a longer period of time, and only two non-G-T shows come to mind (NG, J!) as also surpassing it.
I do believe something that was advertised to someone (be it viewers or advertisers) is getting shuffled to the back. Gong, DG, and Race, at least to me, seem to be the 3 most likely candidates. My money's on Race.