[Nailman]

I think that ultimately the choice of 5 vs 7 days boils down to what you're going to want to please.

At 5 days, you please people who have the free time / will to get on every day, play a lot, write a ton. It's even the same thing that has been said a lot here; "I have enough time, and I can do this, otherwise it will feel slow for me who can get online every day!" Arguable, but fair.
At 7 days, you're pleasing the people who do not. To those who have limited schedules, be it a job, demanding colleges, are on a trip, etc. the 2 extra days come in extremely handy because, arguably, the moving age counter also doesn't help.

A 6 day year could be a plausible solution. It doesn't "slow down" the game a lot, but it also does just enough that people who have not a lot of free time during weekdays get something out of any year at any given time.

Personally, do I think it's the best? No; I largely prefer 7. I have other hobbies, other stuff to do, and eternia is far from the top of my priority list (boooooo prego why dont you treat the byond rp game as the most important thing in your life!! grrr). But above that, I want to just be able to not log in for three days, and not feel "oh fuck i wasted so much time the year has ticked already im so fucking dead" because that's what stops me from playing again.

But in the end, I don't think there's a world where everyone leaves this happy. The people who *need* to take time away from the game will feel like that resource, which they are already extremely short on, is being devalued if the year clock remains at 5. The game is already at odds with needing a lot of time taken away to do stuff (eternia homework in general, like collecting logs).

The people who don't and are free to play all day every day, are going to feel like they have now too much time in their hands. I think this hinges a lot on the fact that people want to play as young teenagers but not start out as teenagers, but for the sake of playing devil's advocate, I'll go with the notion that suddenly the game is slower, things don't happen as much because now there's no hurry to fit it within an ic year, which is the main way I can see the longer year affecting any character that has already reached maturity, and this can lead to staler IC.

To me personally, the game ultimately functions as just that. A game. My real life comes first, and I have stuff to do for 5 out of 7 days of my week; 6 if I've got anything at all for the weekend. Everyone's life works on that same 7 day cycle, unless there's more trust fund babies here than the one or two we all know about. I don't think that the game will change in how much it morphs over time due to that, since most significant events happen either regardless of current IC year, or they're organized around the days of the week; No one ever organizes raids, world events, or anything that potentially affects the world massively by going "well it's on the second to last day of the year". It's usually fridays, saturdays or sundays, where people are generally free in both EU and US timezones.

tldr
eterniaheads like 5 days
wageslaves like 7 days
there's no overlap