I read your full listing of changes and too much work for a things that shouldn't matter.
I beg to differ... That would depend on the route you choose to pursue.
For instance, if you choose the D only route, you can afford to purchase a membership at the photography studio Cassandra works for.
However, if you go on the harem route, you can't because Martin gives you a small severance package the day you quit. MC decides not to play the audio Georgina recorded in the bathroom due to the fact MC and Martin are good friends. There may be other places you can't go as well (unverified).
If you go on the D only path, you'll talk to Maria instead and get the larger severance package because you'll then have the audio recording (that you'll play for Maria to hear) Georgina sends you prior to arriving to your job to quit.
Using my guide, you'll avoid all of the hassle regardless which route you chose when you began (D only or harem).
The thing is, you'll have to start from the very beginning of chapter 2 in order for this to work.
If you want to go on the harem route, you're going to need extra money because you'll be limited on what you can buy and where you can go. Unless there is a way to modify the funds without having to go through this process.
If you're playing on the D only route, then there's nothing to worry about. You won't need to change anything.