1. Would be nice, but IMHO not overly needed.
I think that the ability to change default accounts like "admin", "user", etc. must be everywhere without fail.
2. Do you really need over a 32 character password? There does need to be a limit from a coding standpoint. At least it's not limiting to something like 12 characters...
I love long passwords, there is no such thing as too much security, RouterOS has this option.
3. Why?
Masking the network infrastructure, firstly, is an additional security measure, and secondly, for additional advanced control and accounting of network devices.
4. This has been requested for years. By far the most important on your list.
Even with a self-signed certificate automatically generated by the switch itself, without the participation of an administrator.
5. Never looked to see if you can do that via the ACL.
Via ACL it’s probably possible, but ACL is a slightly different and more complex mechanism, and it will most likely load the processor more. It would be easier to add a simple field in the System tab similar to the IP address from which access to the switch is allowed.
Unfortunately, I do not expect to see any of these. It's obvious that Mikrotik treats SwitchOS as the bastard step-child as compared to RouterOS.
Note that I am a big proponent of SwitchOS and use it on currently seven switches on my home network.
The above functionality that I would like to see in SwOS is not something supernatural, just additional security and ease of use. It would also attract even more people's attention to these devices and their use.