What if speed when carrying heavy items varies depending on character

I thought of this idea while I was carrying a marble piece as a Mighty Wolfgang at the same speed as my friend playing Wendy, and I think it would be good to have more things to offer to the team depending of which character you're playing. So I made this to give an idea of how it would be, percentages refers to speed reduction, currently is 85% for every character. What do you think?