The people who want this should present examples of it working well. I can't think of a single example.
A UI heavy game designed for a pulled out camera suddenly auto-centering and zooming in on assets that aren't designed for close cameras; Losing the gorgeous painstakingly crafted scenery just to look at animations that are nothing to write home about. All that, while I'm being asked to interface with this interaction through text. I've never seen it work, and the best implementation I can muster up doesn't even seem appealing.
I'm not asking for it to zoom in beyond the default 'close' - I'm wanting to be able to zoom in closer than max 'zoom out' distance when in conversation. Like I said, I often play zoomed out for battles/scouting in order to see more, but then I'm in conversation and locked to that distance.
My current playthrough I'm doing it zoomed in a lot more, and I notice a lot more of the gorgeous details that are on the maps.
I've never played an isometric rpg that let you zoom the camera while in conversation. Obviously the IE games had no zoom anyway (not counting EE, which I haven't played). Am I imagining BG2 letting me still pan the camera? I seem to recall NWN(1/2) let you control the camera except in scripted cut-scenes.
So no, sudden uncontrolled jump and zoom beyond maximum is not what I'm asking for. Just an unlocked camera - how could that not work well?