Roland, I’m still new to BB but thought I’d throw a couple thoughts out.
Editing Columns
I too thought I couldn’t edit columns. But, in Pagebuilder mode, hover over your Photo element and you’ll see the icon Ben pointed out in his screenshot.
Duping Column Settings
It is a little odd you can’t duplicate a column with its settings. Because of all the other streamlined/easy-to-use functionality, I am OK with overlooking some things and willing to do a little extra work. However, my opinion may change as I dig deeper.
I haven’t tried, but maybe creating a class or ID that handles your column settings could be a work-around. Then you just need to type/paste in the class/ID into each column’s settings. I’ve just started creating classes for managing product line colors and such. I’m sure I’ll end up expanding that beyond colors at some point. Again, I’m just getting started and don’t do this for a living.
Adding New Features, Improving Existing
They seem to be pretty active in developing BB. I could be wrong, but the plugin and theme are really their main focus. Probably more so on the plugin.
I came from Pagelines DMS2. I looked at BB’s other major competitors before landing here. There was something about the simplicity of the BB demo that hooked me. Well, that and the generally positive and even niche-leading reviews/comments/articles/etc that I read. Their competitors may have some things that are more sophisticated. I suppose that is for you to weigh.
Good luck!