I wish somebody would buy the rights off Terry Pratchett, and make "Cohen the Barbarian".
Another pet hate remake of mine: The Man in the Iron Mask. Not that the original (made in 1939!) was good. But this version was awful. They had four musketeers apparently all from different continents, a surfer dude Louis XIV, D'Artagnan played as Inspector Clouseau ...
Richard Lester's earlier The Three Musketeers and subsequent films at least had consistently believable casting. There is more to a good film than big name actors.
I believe that there is nothing inherently wrong in casting e.g. US actors in English or French roles. It is a standard and lovable Brit joke that Tony Curtis once said on screen, in a thick Brooklyn accent, "Yonda is da castle of my faddah" (though this may be urban myth, unless he did indeed say this line in Taras Bulba), but if everyone else sounds roughly the same, things at least hold together. But a French Porthos, an American Athos, an Oxford English Aramis and a hammed D'Artagnan ... the effect is of a bad revue, not a swashbuckling adventure.
One or two remakes I will pass, however grudgingly:
The Mask of Zorro. OK, they laid the cliches on with a trowel in the final fight scene, but I'll allow that the rest of it was OK.