Hi all, let's finally close this thread, thanks all for your inputs.
The solution I suggest is this: 1. implement multi-links opening when C-c C-o is called in a paragraph and there is no link at point (similar behavior than the one we have for links in headlines); 2. let `org-open-at-point' fall back on ffap so that raw links in comments and anywhere else can be open. (If needed, this behavior could be bound to an option.) 3. factor out `org-open-in-paragraph' and `org-open-in-headline' from `org-open-at-point' so that `org-open-at-point' does what its names says it should do. I will implement this in master. Thanks, -- Bastien