There are multiple sub-subjects but for the one that is about the P1S to A1mini conversion I am obviously not talking about changing the geometry of the model in any way.
If the geometry changes a lot, it is important to reprint the model to ensure proper printability.
The issue with your proposition is that designing all print profiles to the A1 mini seems more like a hack than a real solution as it basically negates the advantages of a bigger printbed.
For non A1mini users you have the additional issue that you can’t leave it as an A1mini profile as you wouldn’t print your exact print profile.
If non A1mini users don’t do this and simply design for their machine then it could be that the automatic conversion doesn’t work (plates could need to be split, object could need to be rotated in Z).
The thing is also that this issue branches into others but all could have the simple solution that is to allow unprinted models under certain conditions.
While Bambu Lab decided this way of doing, it isn’t certain that they opposed doing it differently, it might simply have been a good easy solution that they found while other exist too.
If it would only have been about a conversion issue I would have only added a comment on the “ability to upload profile and mark it as not printed” post.
In the mean time I also found this post: Fairness and Rule Enforcement on MakerWorld where the user complains about people reusing the same image for different print profiles that sometimes don’t have significant differences.
This can come from people simply not wanting to reprint models for nothing, so this would also be improved by allowing profiles without a make but with a warning for example.
I feel it’s like allowing handicapped people to sometimes use the exit as entrance as it may be easier for them. It is insignificant for us while it could be a big game changer for them and apart if you find an issue it is something to consider.
From a computer science aspect it isn’t a difficult change to make either.
There are many bigger issues (for the users) I can think of but usually they are the result of active bambu lab choices, this one seems possible to change at least.
To be complete, as you asked for it, here is a simple concrete example: You have an extruded ellipse of size 185mmx100mmx20mm (XYZ) that you put it unrotated on your P1S printbed. After conversion it fails on the A1mini (plate of 180mmx180mm) but in reality if you rotate it 45° it is possible.
Another case is simply to have a P1S bed full of parts (ex: 9 default cubes in object mode), the conversion will fail at the moment but you can obviously simply make more plates.
There are also more advanced setups that would brake if you move pieces around for example like connecting brims to reinforce them
Finally, print profile are there to have everything already setup for the user.
Even without it being confirmed as printable it is already useful.
Making some extra profiles to handle special cases to improve some user’s experience shouldn’t be made more difficult by forcing the use of a less convenient method.
Personally, I am not only on Makerworld so I already make available non Bambu Lab solutions but these, sometimes less easy methods, shouldn’t dismiss more specific solutions like ready to use bambu 3mf files.