I completely disagree that E.T. would get higher praise if it was at Disney. It's entirely 1990s Universal, and does not have the level of detail and sophistication in its animatronics that all those classic Disney attractions do. It also has been barely touched since then.
Say what you will about Disney, but not only do they actively plus most of their E-Ticket lineups, but they stand the test of time because they were so well-made. The animatronics alone would embarrass WDI. It's very, very inconsistent. I think Universal could make the attraction worthy of that praise, but it's just not at that level at the moment.