Lucas having the capability to show a bigger,grander universe did just that

Grander? Maybe. Bigger? Definitely not. After ESB, each successive installment of the Star Wars series gradually shrunk the universe. The same damned planet (that's supposed to be in the middle of nowhere) shows up in 5 out of the 6 movies. With the PT, interpersonal relations get so tangled up between all of the main characters that it's hard to believe this saga takes place in an arena any larger than a city block, let alone a vast, immeasurable galaxy. Vader made 3p0 and lived next door to Greedo! Obi-wan knew Boba Fett! Chewie and Yoda were best buds! This, to you, is a bigger universe?

there are many untouched original versions now with blu ray quality

Now that's just objectively untrue. When it comes to issues like artistic merit and personal taste, you're free to throw around the "that's just your opinion!!!111one1!1" tautology, but right now you're declaring something that is factually incorrect. There are no untouched original versions in even passable DVD quality, let alone blu-ray. Adywan and Harmy have done masterful jobs with their ESB and ROTJ reconstructions, but even as good as they are, they will only ever be reconstructions. D_J's GOUT V. 3 looks incredibly promising, but the source material he's using is so limited that even this set will never be quite what a decent DVD release of the theatrical Star Wars trilogy should have been. Get your facts straight next time.