What Konami should have done:
Stage 1a // Get a competent team to develop/port standard but faithful, high quality remasters of Silent Hill, Silent Hill 2, Silent Hill 3, Silent Hill 4: The Room, Silent Hill: Origins & Silent Hill: Homecoming. Sell them ffor a reasonable price on PS4, PS5, X1, XS, Switch & PC.
Stage 1b // Get a competent team to develop/port standard but faithful, high quality remasters of MG1+2, MGS, MGS2, MGS3, MGS4 & MGR:R. Sell them for a reasonable price on PS4, PS5, X1, XS, Switch & PC.
Stage 2a // Contract a competent studio to develop tonally faithful, high quality modern remakes of the first four Silent Hill games in chronological order (from 1 through 4) for PS5, XS & PC.
Stage 2b // Contract PlayStation studios such as Bluepoint to develop tonally faithful, high quality modern remakes of MGS, MGS2 & MGS3 for PS5 & PC.
Stage 3 // Get a competent team to develop/port standard but faithful, high quality remasters of the portable Metal Gear & Silent Hill titles for Switch.
This is neither rocket surgery nor brain science.
Then take the dough and work from there.. build some bridges then build a couple ~80-strong studios led by a mix of og and fresh talent. One for new IP and another for new Silent Hill games. Expand into Castlevania and smaller owned IP if successful.
I would've said license the Metal Gear IP to Sony for future games and co-fund a new studio with them where Kojima & co could consult, but with PHYSINT being a "Tactical Espionage" game I doubt Sony or Kojima would be interested at this point. I think MGS is dead as far as new games go and the ship has sailed.