I don't know how you can claim to have reached that conclusion. And that's probably why we are just spinning our wheels here.
Because the 4 day ticket is feasible for any guest staying 4 or more days. Regardless of check-in day.
Let's say you want to 6 days worth of tickets: A 6 day in the middle of April 2025 would be $753. A 2 day ticket would be $330.
So you could buy the 4 day promotional ticket, PLUS a 2 day ticket -- Get 6 days for $730, and it would STILL be cheaper than buying a regular 6-day ticket. The only thing you lose is the ability to buy parkhopper. (and most guests don't buy park hopper).
For the record, for 5 and 7 day tickets, it would be cheaper to just buy the ticket.
But you can save money on a 4 day or 6 day ticket, regardless of when you check in.
Now, let's check the 5 day ticket for the same April dates. Only planning on staying 4 days, then the 5 day ticket is worthless. Want 6 days of of tickets?
Well, I picked April dates that would give the MMB offer the biggest advantage -- Dates with an actual 10% off -- So the MMB is $635. But, if I want 6 days-- it would be another $184 to add that extra Magic Kingdom date. A total of $819 -- So even with the maximum 10% discount, that 5 day ticket is useless if you want to add extra days. It's obviously useless if you want to stay less than 5 days.
If you are staying 5-6 days -- It's useless if your check-in date is Tuesday, Wednesday, Thursday, Friday or Saturday. It's also useless for 5 day vacations with a check-in date of Sunday. So for 5 day vacations, it's only useful if you check in on Sunday night/Monday morning. It would be useless for any other check-in date. For 6 day vacations, it would only be useful if your check-in is Sat/Sun or Monday morning.
For example, if your flight gets in on Friday evening, and it's a 6 day trip -- It means your 6 on-property days are Sat/Sun/Mon/Tue/Wed/Thur --- Only 4 weekdays.
You dislike that you can't add park hopper. The minority of guests add park hopper. But a ticket is not useless without park hopper -- Again, the majority of guests don't add park hopper.
On the other hand, the 5 day ticket is literally useless on weekends. So if your vacation window does not include 5 weekdays, then the ticket is indeed useless. And the majority of vacations do not include 5 weekdays. (I seem to remember reading a few years ago some data that the average on-property stay was 5 nights.. obviously some people longer, some shorter).
So in conclusion: The 4 day ticket is feasible for any guest staying 4 or more days, regardless of check in day.
The 5 day MMB ticket is feasible for any guest staying 7 or more days, OR guests staying 5-6 days -- But only with limited check-in days.
Pretty obvious that the option #1 is less limiting than option #2.
Personally I have zero interest in a ticket that forces me to one park per day over any 4-day span. You have no interest in a weekday ticket. I get that. But checking my bias at the door, I have no idea which approach is more or less appealing to hundreds-of-thousands of
DVC owners.