Map cluster interactions

Hi all!
I am in the process of designing a piece of software that heavily revolves around a geo-spatial view (interactive map). I would just like to point out that I have never designed anything like this before so I’m completely new to this area which is both exciting and terrifying at the same time. Most if not all of the interactions used have been heavily inspired by other apps out there; people are used to google maps, so what does google do? However, google do not have to manage clustering - please see fig below.

By design the out of the box interactions are; double click to zoom, which makes sense to me because this is the standard axiom of any map if you’re not using the mouse to scroll in and out. So in my design it is a single click to view details and a double click to zoom / start splitting the clusters. However, a more senior member of the project team is adamant that we will have to retrain our users if we introduce this because and I quote says “everyone expects a single click these days” :S. Now I am more than happy to test this theory with users however, I was just wondering whether anyone else has worked with maps and has any experience in what the interaction in this case should be?
Thank you in advance

You may want to look at some white papers for this. Check out Susan Weinschenk or Neilson Norman Group. Forrester may have some too.
I definitely don’t agree with that senior person on your team. :grin: We still double click folders. You may want to ask why they think that.

I have read quite a few things by the Neilson Norman Group but most comments are directed at website based design, I’ve been finding it really difficult to find documented design patterns for GIS systems.
I don’t agree with the senior member either but I’m easily convinced I’m wrong because of how out of depth I feel, and I have no other UX/UI team member to converse with so I really do appreciate your view. I honestly do not know where he has gotten his opinion from and I will ask him to elaborate on it further.
Thank you!

One thing to keep in mind is interactions should change based on system unless there is a very specific reason. So even website interactions should be similar to GIS interactions.

I can’t remember where I read this but it may be helpful.
“Design for the experience first, then the form factor, then the operating system.” This will create the best experience.

Good luck!