I think the whole thing should be structured around the amount of hours, with only one price for the full game:
Single game pricing:
$1 = 1 hours
$3 = 4 hours
$5 = 10 hours
$8 = 1 day
$15 = One week
Subscription (no time limit):
$25 = 1 month for 10 games.
$40 = 3 months for 20 games
$70 = 6 months for 40 games
$100 = 1 year for 50 games
PS+ subscription benefits:
5% off 1 months subscription
10% off 3 months subscription
15% off 6 months subscription
25% off 1 years subscription
DO IT SONY!
The PS5 Exists.