Umm, Carl Macek originally consider import gundam when he travel to japan but Tomino vetoed that, because he want more episode(65 for the serialization rather the 43 original) and creative control and tomino never wanto give that.
I wonder what a Macek-made Gundam would look like..........I honestly believe it wouldn't change the tone of Gundam too much--his detractors might claim he would tone down everything, not so much really as they kept 99.999999% of the deaths. Robotech was actually
made darker than Macross when they killed off almost everyone at the end of the Macross adaptation. To be fair I have mixed feelings on Macek and Robotech in general but some of the worst accuations against this guy are almost baseless.
Honestly, an adaptation of Gundam by Macek, if he had done it at the right time might actually have worked if we use Robotech as a blueprint, suppose he decides to re-adapt Gundam after having a realization that Robotech was going nowhere..........he could have just mashed Gundam, Zeta Gundam(promptly retitled Gundam The New Generation) and Gundam ZZ, then split Char's Counterattack into four different eps into one series and it would actually be more consistent and have the same gritty war-is-hell tone.