Once again, if you don't own the movie in anyway, it might be worth buying this CE. Especially at £15. However, if you're like me and want to "upgrade" your set, it's not really worth it (at least not at £30). That's why I think these FMA CE releases (or the Terror in Resonance one) is a ever so slight step up for these CE re-releases. You do at least get a booklet, which is always something.
As someone who already owns the original FMA due to the Amazon Canada Deal of the Day £10 offer years ago, I've been interested in getting the UK version for a while and I never really bothered with the previous CE due to the barebones content that it had. This 2020 re-release is a lot more appealing since it's similar to Plastic Memories but with a booklet that has artwork from the UE at least, so once it goes down in price I'll pick it up (don't want to spend £70 on the series right now tbh).