Do we have to make any changes to a Springer LaTeX template before submission? The Springer template is by far the most bizarre out of all of the LaTeX templates I've seen so far. There is no problem as long as you stick to the two-column option, but the appearance of the single column option is just crazy.

The main problems are the following


The right margin being outlandishly wide compared to the left margin.
Smaller font size in main content
Bigger font in reference section


These issues can be corrected to make the format look identical to the published papers in the same journal. However is it necessary?

I would especially like to know from people who have published papers in Springer who have submitted it using the standard LaTeX template provided by the publishers. 

This is particularly about Multimedia Tools and Applications, but I've noticed this problem in other journals sections that use the same template.
No. I don't recommend changes to the template. That is because the journal can easily update the template to the style they prefer for publication. Your changes to the template won't affect the eventual look of the manuscript.