In the 4.1 Desktop installer, the dialog for partitions+filesystems proceeds in (at least) 3 steps: 

1) on the first screen, one specifies the size (among other things)
2) on the second screen, one can enter a label (among other things) ("Создать файловую систему" > "Параметры" > "Метка тома")
3) on another following screen, one is suggested a mountpoint (among other things).

This division is quite inconvenient: this order is not logical. 

The logic should be: first, one decides which part of the filesystem tree one wants to store on the partition being created (i.e., decides on the mountpoint). *Depending on this*, one decides on the size and on the label.

Also, the installer does a good job for a newby: it suggests the mountpoints for newly created partitions in a reasonable order (except for swap, see the other bugreport). 

But this feature turns out to be useless: the person must see beforehand which mountpoint is suggested for the partition he is creating in order to make a reasonable size and a reasonable label (and a reasonable filesystem type).

I suggest to select the mountpoint (and to show the suggested mountpoint) as the first thing in the partition+filesystem creation dialog.