Quote: "So would you kindly take a look at these questions here and give me your thoughts?"
Yep

These are MY PERSONAL thoughts:
Quote: "** Dialogue System: Are you cool if the dialogues are displayed like in 2D Rpg Titles and older titles (you know: textbox with a portrait picture and selectable multiple choice options) or is voiceacting a total must for you throughout all dialogues? Keep in mind that voiceacting will be delivered by amateurs and freelancers."
I personally think 2D text-based dialoges are the best, and other stuff like radio transmissions should be done with voice acting
Quote: "** Do you mind me adding some setpiece levels that serve the tone rather than advance story or gameplay?"
If there's something to explore I'm in
Quote: "Concidering that I want the game to look and feel a tiny bit like an old photo...would you concider random image distortions, scrachtes and stain appearing on the screen to be stylish or annoying."
If these scratches and stuff are not "overused".
Quote: "Cutscenes ...yay or nay?"
Totally yay, but I'd like them to be scripted, not only by playing a video.
Quote: "Should I add a lovestory or would this feel too trashy in an FPSC title?"
I'd recommend not, the problem is if you could really create some emotions on the player then yes, but I think this might get a hard job.
Quote: "Would you care about puzzles that might need to be looked up on wikipedia?"
I think it might be better if you'd find all the needed clues ingame, because when I switch from a FPSC-Game to the browser, it instantly crashes, and we all know the save function isn't very reliable
Quote: "Would you mind me releasing this in chapters?"
Nope because if you ae. release Chapter 1, we can play it and give you feedback while your doing Chapter 2^^
Anyways good luck with your project, just don't forget to post new screens sometime to keep up the interest