If we get yet another visual transformation for the Saiyan duo, I am outta this franchise, really...
Vegeta on Yadrat was a breath of fresh air, so I would like to see them to gain something more interesting, like a technique or chi manipulation - make the series about martial arts again and not another hair recolor for new keychains to be sold.
I kind miss my childhood when GT came out... was a SSJ4 a huge departure from classic SSJ progression? Yes, both visually and how it worked. But to me and probably others, it was so visually distinctive and interesting and looked cool back in the day, that it became an iconic design. What GT lacked in execution, it made up by character designs to me and it clearly made it's own look to distinguish itself from Z.
I am kind of bored by seeing the characters looking the same for a decade now, wearing the same clothes and their hair just recoloured to magenta, blue or grey, wow. Ressurection F was great at reinventing some of the designs before the SSJ Blue reveal and it is hinted even in Xenoverse 2, that this was kinda the new staple look they went for before they chickened out with Goku Black arc.
Why it didn't work out? Was some merchandise performing worse with new clothes or was there some poll?
Because I don't see the reason for this, as more clothes and designs means more toys and merch.
At least my Goku figures in Z Gi are relevant for almost all the eras and I don't need to buy a new ones