I didn’t know about this ESB lucasfilm intro… I really missed the Fox fanfare opening TFA but using ESB closing coda is very weird for an opening theme. I hope Williams is going to deliver something to replace the Fox Fanfare for EpVIII and the other episodes (or 12 wagnerian movies without intro ?)… even a carbon copy would do… as rich as Disney is, they could even buy it 😃
The ESB lucasfilm intro was done for the digital versions released in April of 2015. My theory is that they wanted some kind of music to accompany the logo in the other five movies so that the Fox fanfare in ANH wouldn’t be jarring.
Of course, less than a year later we had TFA without any intro music at all. Maybe they just hadn’t arrived at that decision in April and might’ve done things differently had they known?