I appreciate your input and effort to write that many words. That's a weird theory, though. For two reasons.
1. Lack of logic. One simple example would be the Drafts app that allows basic notetaking with "Save to Evernote" option. To "be nice" to this developer, Evernote should give up the notetaking part.
2. The focus. Any company that wants to suceed has only one thing to look at and focus at. That thing is The Final Customer. Not the supplier, not the distribution partner, not the 3rd party developer, but the final Customer. If Final Customer is not happy, they do not spend money with the company and such company closes shop. End of story.
So, although my iCal implementation request may not be something they implement, I wouldn't be saying it because of the 3rd party developers, but rather by lack of popularity of my suggested feature.
I think I am done with this discussion. I submitted a feature request and explained at lenght why I want it and how it should work.
Have a nice day.