The GM is the guy that is directing the game session --in any case, this is true for most role playing games--, so let it show the image the he wants or needs for supporting the game flow and the narration. For that, he needs to complete the Shift+Ping horizontal feature with some kind of zoom control, that Patric C. properly described as its natural vertical complement.
So, if we are talking about online role playing games, yes, GM Zoom Control is a needed feature. Personally, I'm used to it in other virtual tabletops and I was simply waiting for Roll20 to adding it. It only seems natural, a no-brainer.
Now, the devs need backers and supporters for adding features quicker. I thought this was the reason why we haven't this feature right now.
Honestly I never thought that the GM capability of setting zoom levels for his players could be disregarded (?) . . . As I said, I'm used to GM Zoom Control and if it wouldn't be included, that would be a big factor conditioning me to step back to the earlier VTT that I was using, despite all its drawbacks. Drawbacks that I'm hoping Roll20 will not have.
I've using this kind of view-zoom control for players for years --since 2005 or 2006-- and it's a no-brainer. I never saw anyone protesting about it. Isn't even new for Virtual Tabletops focused into narration, and Roll20 claims that of itself.
But let me stress this point: the map is just a game handout. It's not the "property" of the players; it's not automatically, nor by definition, the core of the very Virtual Tabletop nor the core of the role playing experience. Separate role playing games from board games, they are different things even if they share a number of elements.
So, the GM can --and should-- handle this game handout without any constraint if that is going to improve communication with players or enhance the narrative flow. And properly used, it certainly does.
And well, if I have a player that is suffering X eyesight problems, and both of us agree in playing a game together, I wouldn't do anything for annoying him/her, in the same way if I promise a Hard Sci Fi game setting I'm not going to throw goblins from Faerie and hobbits from the Shire into the story. Role playing activity is between friends, after all.
So Gauss, your relentless protest against the possibility of a GM Zoom Control feature in Roll20 strikes me like protesting against the use of color in maps, tokens, or other handouts because someone can be colorblind:
The one suffering colorblind very well can say that the use of certain colors, or any emphasis on colors for images or maps "isn't NEEDED", and also claim that nobody, not even the GM, should impose colors to anyone in a game. It's however easy to see that such posture wouldn't be reasonable nor objective, and exactly the same is happening here regarding the suggested feature for Zoom.
This conversation initially started as a way to fix the shift+ping, player has to rezoom, GM has to shift+ping again issue. But from my pov it rapidly became a discussion on how the GM should have the ability to control the player's zoom levels
I don't understand this affirmation. Clearly it tries to be a rejection and refutation of the GM Zoom Control feature request, but I don't see how.
Also, this is about the third time in this thread that I'm answering to you that this conversation didn't start in the way you are saying: the GM Zoom Control feature request is there, in the first post, along with other points (You are right about fixing how zoom currently works, but merely fixing it has little to do with the point of Clinton D. and the requested feature). Maybe here is some confusion, but I don't understand where does it comes from.
It's like you are saying that we shouldn't be speaking at all about the GM Zoom Control feature because "it appeared here in an accidental way" . . . I can't see how that could be a valid point.
And as I already said too above, I was going to suggest the GM Zoom Control feature for myself, but Clinton D. ninja'd me.
I wonder if you want me to start a new thread here for suggesting and discussing the GM Zoom Control feature? Would it make sense to start all over again?
Be as it may, Gauss, I'm answering this to you without any ill intention. I simply disagree with your view. My purpose here is not to be rude or to merely discard what you think or see as legimitate concerns. They could be dispelled, though.
Note: I am aware that it was not anyone's intent that it be not a limited use feature. My statement is that intent was not apparent until about 2/3rds of the way through this discussion.
That is because some of us didn't think that entering in the specifics about the implementation of the suggestion were so important, specially when the essence of this discussion has been since the start: "I need this feature" vs. "I'd hate this feature, and I'll ban people using it if it's implemented, or even I will stop using this app if the devs finally include it."
And for what is worth, I'm seconding all what Patric C. has been saying as well.