Let's see..
1) 7zip sfx:
http://www.powerarchiver.com/forums/showthread.php?t=30
2) Rar compression
It is copyright format. See also
http://www.powerarchiver.com/forums/...ht=compression
3) Batch Tool - output naming convention.
This was on the old wishlist forum (now lost). The preservation of the extension was requested as an option within the Batch Tool - I (for one) need to keep the current naming methodology. Cannot hurt to raise it again on this new forum
See also
http://www.powerarchiver.com/forums/...ighlight=Batch
regarding Batch compressing Folders (as well as files) - this impacts on the naming.
4) File explorer options
Not sure I follow. Using Windows Explorer Shell (Compress with Options) you can do this now
5) Expanded/extended Help
Yes, more (context sensitive) Help is always a good thing.
Although I prefer deipotent's suggestion of the "windows standard" ? button.