Thank you so much for taking the time to write this long post <3
The error you mentioned is something I already know of - the pictures on the screen are erasing too fast, which seems to be a core bug in the engine itself, but it'll hopefully be fixed in the next update. The fact you couldn't complete certain clients is an actual bug - it's not just your eyesight. This will be fixed in the next update! :)
Happy to hear people really like Neil's derpy expression in the selfie CGs. When it comes to Neil, I never really make him appear 'cool' in his CGs, I always want to catch him off guard. He's either surprised, embarrassed - possibly both - or he shows a side of him that's quite rare (him smiling). I find showing the awkward side of Neil is a lot more fun, and realistic as well, than just making him appear like the coolest tsundere on earth.
His ending CGs are basically me having fun with torturing him and making him completely embarrassed. But you'll get to see those in the next update ;)
About chapter 12 - when I tested it out with a bunch of friends, they all wanted to punch him. Originally the "yell at him" option was the Fierce option, but I moved it to the Kind option when I added in the slap. I realize this was perhaps the wrong move, so I've changed it to something more mellow for in the next update.
As for Sam, while he's sweet, Dimitri would be the sweetest of them all - in case that's your thing, hah. Sam is a little bit more complicated, and he can be quite vicious as well, but he should always have your best interests at heart. Unfortunately, he'd be the 5th bachelor I'd add (right after Aiden).
Again, thanks for your feedback!