If I understand your description of the rules correctly, it sounds like that removes any sort of strategy from the game (manipulating the board and the rack), making it a sequence of Scrabble puzzles instead with no between-player interaction. That's not necessarily a terrible thing, but I think it would remove a lot of the interest for many people (me included).

I have read about Nigel Richards, the New Zealander French Scrabble champion who doesn't speak French, and I think that the game he is the champion of is "regular" Scrabble (with French vocabulary). For example the Guardian article https://www.theguardian.com/lifeandstyle/2015/jul/21/new-fre... talks about his "pretty rotten draw of letters".

Edited: Ah, I see from his Wikipedia page (https://en.wikipedia.org/wiki/Nigel_Richards_(Scrabble_playe...) that he has won both Classique and Duplicate titles.