I think the incentive to play Netrunner is that it's much easier to commit to it, since you know you'll never have to chase a $50 mythic rare. FFG will get my $15-40 a month for a long time, while I've burned out on Magic due in part to the expense. In the end, I think Netrunner is a better game than Magic, and that's the biggest reason to play it, but the OP system is very rudimentary, and really that just doesn't make sense. There's no reason not to import the fundamental aspects of Magic's OP.
I don't really understand what that means. Does taking notes making Celebrity Gift a lot worse? Is part of the strength of the card that your opponent might forget what they saw? What if they don't? I don't think this has anything to do with game balance. These rules also aren't Netrunner specific as far as I know (can someone confirm?) so I doubt Netrunner is balanced around them. They probably just copy-pasted the tournament rules from every other LCG.
Slow play is a problem anyways, and there are no ways to enforce a standard pace of play in the tournament rules, so I don't see it as a particular problem with note taking. How slow do you write? With Gift, I find it slower to sit there, looking at the cards and trying to memorize the hand than just jotting it down in shorthand and being done with it. I have far more problems with players sitting there, trying to find an out that they know doesn't exist, or spending far too long on trivial decisions. I prompt them gently and let them know when we're at the halfway point and haven't finished game 1, but there's no way to enforce slow play. What is the penalty for ridiculously slow play?
The scouting problem is tricky. This game definitely functions on hidden information, so if you can get a few key pieces of information on what problem cards other players have in their decks, you can gain a lot, but honestly, take that idea to it's natural conclusion... no matter what you do, unless you stop holding in-person tournaments and just have everyone playing anonymously on OCTGN with no usernames, you cannot stop players from getting information about their opponent's decks that they wouldn't otherwise have. Unenforcable rules are a disaster waiting to happen. I think it's better to have your LGS talk to people who are maliciously scouting, and let a possible suspension or ban from the store be a deterrent. Generally players know if someone is scouting or is excited to watch a match.