u/K-Stater1420

For context I've been playing FIFA 23 primarily since its release. I am primarily a career mode player who uses manager mode. I occasionally dable in custom tournaments but don't touch the other modes asides from create a player. I never cared to upgrade before because I was quite fond of the official licensing the FIFA had. I enjoyed playing the officially licensed world cup as well as licensed champions and European leagues. From what I saw in newer installments alot of licensing was lost. So my question is with FC 26 the free game of the month is it worth upgrading and starting from scratch again? What has changed career mode and gameplay wise? Game breaking glitches? Give me the bad and the good.