I have to disagree with that . Today's FE have almost all the same possibilities. (implemented in a different way, but almost all can do the same thing). Except in term of layout.
Layout capabilities is one of the most important point that makes difference between Front End.
I think Front End choice is do mainly on this 3 points :
-how it is easy to configure
-Does it support your hardware
-how nice it looks like
I think ,one goal of each (free) FE developper is to have the maximum of users. That is the main motivation. (at least mine). The competition between FE and users requests force FE creator to be more creative (or copy the idea of the other...) and each time improve the quality of their sofware.
My point of view, is that the soul of a FE is their layouts. That's their personnality, it is the first thing you see when they runs.
I have never wanted to make a MameWah layout convertor or a Mala one , even if it is easy for a developper. And i would never did it without having the authorisation of the FrontEnd author...
When i convert manually a layout from another FE (like i did for the GameCreature one) i always ask the layout author.
Some layout made by Atomic's users can be others FE port , if i'm aware of that i try to find the layout's author to ask him.
Some Atomic Layouts are "Exclusif" and protected. For instance Totoleouf ones. the author agree with that.
AtomicFE is Free (and will stay) , but his layout's format is not open to other FE.
Of course images used in layout own to the artist , and if the artist is agree to see them re-use in other Front End, there is no problem.
you could choose to make a small donation to the artist (if you wish) via PayPal or such.
I'm 200% agree with this point. I'm planning something to hightligh Artist. And best Atomic's layouters could have a good retribution soon.