R127... Maclaine was hardly box office power at the time, she had a hit with "the apartment" , 2 years prior, some bit roles in other movies from 1960 to 1962 and a co-starring role with hepburn in the children's hour in 1962 which I don't think did much box office, and her hit irma la duce was AFTER "what a way to go"....
And of course, Marilyn was supposed to do "what a way to go" after "something's got to give".. If anyone thought that maclaine would have been better box office than Marilyn in 1962, they would have offered and contracts ready for Shirley, not Marilyn to do this movie.....
the days of the blonde bombshell were reaching the end or at least faltering, but to bracket Monroe with mansfield, van doren and the other clones is ridiculous, they NEVER had a a-list career except for mansfield for all of 2 years... the clones were never going to last because they were never box office in the first place.... Marilyn was far above all of them, and was thee original and unique, it was her charm, charisma, magnetism, looks body and yes acting ability that made her so. Sure, she would have had to evolve her image as she got older, but to say she had nothing else to offer is wrong too. she would never have to have resorted to nor would she do b and c level movies...
I tend to think it wasn't that marilyn didn't want to appear unattractive in films, i wonder if it was more that the public didn't want to see her like that! it was more the public's fault, than marilyn's?... Marilyn was also pregnant during some like it hot so there was the weight gain and as well all know she lost alot of weight in 1962 and looked slimmer and more youthful than she had in years...
as far as the "flops" that were let's make love and the misfits.. was it marilyn's fault or the material's fault? both were actually not the HUGE flops that they have been described for years now... they did okay business, they just weren't huge hits...
you're right for a time in the early 60s doris day was top box office (always wondered why she didn't get the million dollar contract first over taylor?) but her time came as the 60's wore on and the public and society changed and her wholesome image became dated and old fashioned and taylor when she reached the age of 36 in 1968 like Marilyn did in 1962, found her career faltering as well because of bad projects and her age.. so it wasn't just a "marilyn" thing...
Monroe had a number of projects and talk of projects lined up after something's got to give...