Curate, connect, and discover
A spreadsheet sounds like a great idea, especially with how the DetCo timeline is so unreliable. And gosh, you certainly have a lot of content ahead of you (DetCo, the prime example of a story that never ends and just keeps going). Since you mentioned the movies and specials, have you watched any of those yet? (The first few movies are super enjoyable!) Localisation, I find, is hard to do properly, in general, it needs a lot of consideration and care to work. - DCMK 1/2
I have! So far I've seen two of the films, and I'm steadily heading towards the third one on my list. I've enjoyed both of the one's I've seen so far! Though I will say the building that exploded in the second one looked cool and I was sad to see it go.
I do think a major challenge with localisation (which localisation not necessarily a bad thing) is that a lot of times in especially older series it's not too uncommon for the differences between what is said and shown don't match up and is noticeable to even younger audiences. I have been considering watching the dub for detco, however, when I catch up, but I'm not 100% on that, and I, at this time have more reasons for watching it in Japanese than otherwise.
I certainly have a long road ahead of me catching up, but I'm both excited and determined to do so. Then again, some of my favourite series are from older things, like Astro Boy, for example (though I do not like the movie, and cannot recommend the movie, please not the movie), so I think it would not be a surprise if I made it through to catching up in DetCo. I will say both Conan and Atom deserve breaks cause they each go through so much.