I was looking at the pro and cons for my particular  application plus I was just  curious why this seems like a industry wide application as it seems more new trailers are coming with them than not.
My wife is disabled so, she need the big entry bar to get into the trailer. The new steps are so much further out from the trailer I don't think she could even reach the entry bar.  I did  see that you can add a second entry bar to the new style steps but seems to complicate  things.  We also added carpets to the steps to prevent slipping.  These tend to collect quite a bit of water when it's raining all that would end up in the trailer when folded up.
In my case the cons out weigh the pros....