Not until Action Comics #1 is in public domain. Merchandise rights belong to DC and WB. This only refers to home video releases.
I’d wait until Action Comics #1 reaches public domain as you don’t want to risk getting sued by DC and WB.
Oh no, don't look at me, my life is busy as it is without trying to cash in on Superman's name. Although it's good to know that when Action#1 becomes public domain, whoever wants to do a superman project can use all the elements from the Fleicher cartoons as well, meaning classic elements like flying and xray/heat vision.
Speaking of the Fleicher cartoons, because of all the recent hoopla about
"the American way" tagline I had another look at the opening and I could've sworn it was
"truth, Justice and the American way" but it was actually
"truth and justice". This got me thinking, most of Superman's media appearances (kirk Allen, Fleicher, Filmation cartoons, Superfriends, Superboy, L&C, STAS, JL, LOSH, SR, the DCEU and most of the animated movies) didn't have the
"American way" in the tagline, but the 2 most influential Superman media projects (Reeves's AOS and Reeve's STM) did hence why it's become so inextricably linked to the character. Very interesting.