Twenty years ago KOTCS would have had a relevant place in Indy movie lore. Harrison would have been young enough not to need a mini-Indy to challenge him.
Lucas would also have been closer to the originals in spirit, but KOTCS would nevertheless have continued to address the issues he created with the character.
I don't think analogue over digital would have any effect. CGI replaces matte paintings. Harrison would still have had stunt doubles with hidden faces. While CGI makes more things possible, the fridge and the waterfalls might not have looked so nice 20 years ago. (The
first draft of BTTF was in existence at the time of ROTLA).
You haven't seen them, yet you know they fail to copy the original more closely than KOTCS?
The voting on IMDB would suggest that even a Nick Cage copy beat a genuine Harrison Ford version.
NT 6.8/10 - 116,766 votes
KOTCS 6.4/10 - 173,106 votes
Not scientific, but it's a poll of sorts.