playstation plus

i have been a member of playstation plus the moment it came out and i have been happy with the discounts and the free games i get.. but then i noticed that i only get playstation minis and ps1 games and game trials .. i want it more spread out give me some psp games an discount on them it seems to me that sony just drops one thing good for psp and it was the ghost of sparta demo i think as a playstation plus subscriber i should at least get a game that is worth paying a year membership for