Total Commander

It would be very useful if you could define a cyclical counter.
In this way, you could for example move files into differernt subdirectories, but every e.g. third or fourth file to the same subdirectory.
E.g.
Source names:
A.TXT
B.TXT
C.TXT
D.TXT
E.TXT
F.TXT
G.TXT
H.TXT
I.TXT

cyclic counter e.g. (i use lowercase c)

[c10+5-4:3]\[N]

that's means:
start at 10
step by 5
reset after each 4 occurences
width 3

result

10\A.TXT
15\B.TXT
20\C.TXT
25\D.TXT
10\E.TXT
15\F.TXT
20\G.TXT
25\H.TXT
10\I.TXT

Another example is creating date-like (year-month) filenames, using with new fractional counter:
[C2001+1/12].[c1+1-12:2]
result:
2001.01
2001.02
2001.03
2001.04
2001.05
2001.06
2001.07
2001.08
2001.09
2001.10
2001.11
2001.12

2002.01
2002.02
2002.03
2002.04
2002.05
2002.06
2002.07
2002.08
2002.09
2002.10
2002.11
2002.12

Also - automatic reset on specified conditions e.g.: on first counter/field change.
For example: many photos shooting on different days, first part of the name is always date (from filedate or exif),
second part is cyclic counter, reset on date change.

Agree with @Gral.

at multiple rename the filename, suggest to add a loop counter.
This will be a very useful function.

@ghisler(Author)