Nah, I like the old one, and I like that it’s different for ANH. Just because it’s what was there and I like hearing the little audio peculiarities like that.
For all my projects I’ve avoided altering things like logos. For example, I don’t want to add the 20th Century Fox logo or fanfare to TFA or TLJ; it would feel improper.
If the primary source for this Custom SE project remains the 2011 BluRay or lower, I’ll leave the 1997 logos. If substantial portions of the 19SE are used AND I find myself in a position to know this before an intended final version of any of them has been released, I’d probably go ahead and use the new logos seen in the 19SE. (But I wouldn’t reencode and rerelease just for that. If ANH and ESB are done but ROTJ ends up using a great deal from the 19SE, I would still use the 1997 logos for ROTJ for consistency’s sake.)