If I had to guess, no, you have not achieved artistic nirvana.
I have had multiple steps in multiple mediums where I thought I had discovered the best thing ever, only to be blown away a few months or years later. And I don't think it's quite uncommon for that to happen either. You said you were a musician, so i'm just going to assume that you constantly look for new music or to broaden your perspective. But if you don't - then you obviously aren't going to find something better than ELO.
When I first listened to Coldplay I thought they were the best thing ever, then I thought that about Muse, then I thought that about Radiohead, then Opeth, then Pink Floyd, then Nine Inch Nails, then Modest Mouse, then Built to Spill, and now I'd say Modest Mouse and Built to Spill and Unwound are pretty much all on the same level. At least in music, it is pretty easy to constantly be blown away, especially when you consider that just through cultural reference alone you can probably get into other genres easily.
Try getting into something experimental. Even if you don't like it at first, the more you listen to it the more you'll appreciate it. That way, even if it doesn't overtake ELO, it will still teach you some new values in music and give you a new appreciation.
Have you tried music like : Unwound - Leaves Turn Inside You, Songs Ohia - Ghost Tropic, Massive Attack - Mezzanine , Leonard Cohen - Songs of Love and Hate(ok not really experimental but come on it's tissue material!) etc.
Games and movies are a bit harder because it requires more of a time investment, but I think there's like 99 other games this year competing for GOTY against BOTW, so maybe try one of those. Try to get more into movies if you want to find something more fulfilling than GoTG2.
Also FUCK productivity
