It would be pretty damn exciting and I'd be converted.
This is an underrated comment, I say this all the time but yet flat earther peeps still call me a "round earth zealot" and/or are sure I am brain washed to only believe the earth is spherical. If I had found conclusive evidence of a flat earth I'd be hella excited, it would be fun to find out something of a massive cover up like this. In no way do I 'want' to believe the world is a spherical planet, the evidence I see all the time for myself is simply too overwhelmingly in favour or a spherical world. I'd really be interested to see how other people have somehow come to the opposite conclusion, but flat earthers don't share that kind of information, no 'zetetic' or scientific experiments or logical reasons that prove the earth is flat that couldn't also just be how it is on a globe.
Regarding the real vs fake pictures argument, I'd like to extend this to CGI too. My question is, how is it that we are able to model the globe and it's surroundings so visually accurately in terms of scale, size and shape? Take for example Google Earth, Microsoft Flight Sim 2020 that uses a 3D globe via Bing maps, game engines that also show a globe visually the same as real life would be like Outerra or even games like No Mans Sky and Star Citizen where if you're on the planet surface in game, it looks pretty much the same as it would on earth in real life with a visually flat horizon and mountains/valleys (even though Star Citizen planets are mostly smaller). If this kind of stuff that I see regularly matches reality why then is it so difficult to come to terms with the shape and size of earth as a globe? Yes I understand this is all CGI, btu the question is how does CGI match reality this well using globes? Is this visual evidence? If not, then would you also not take every other game that generally uses a flat land model as evidence of a flat earth since lets face it, globe or flat looks the same locally)?