Hello fellow wastelanders.
I have encountered all of those issues you mentioned myself, and, if I might say so, am also more than discontent with the problems they produce.
Regarding point #1:
This is a highly interesting idea Ox-Skull, I thought of something like this, too, but I am afraid that there would soon be all normally mining powergamers present at the trader's, purchasing from them as well until they run out of stock... -.- What do you think about that?
Regarding point #2:
Absolutely positively approved! (and as Frosti just confirmed, there's a highly annoying programme that can be found all over the net...)
Cheaters are to be burnt at the stake in Golgatha!
Regarding point #3:
I also saw the post you refer to. I totally agree to the fact that it's somewhat illogical what the description says. But instead of condemning the developers' (admittedly great) work on balancing issues, we should encourage them to simply change the leather armors' description in the proto.msg files from what they are now to something like "...out of finely tanned and meticulously stitched together highly durable golden gecko pelts..."
As also my common sense tells me (from fighting golden geckoes HtH ^^) that those lizards' skin is a whole lot more resistant than a brahmin's hide

After all I would like to thank you for giving a stumbling block for me to finally contribute something to improve our beloved Beta.
Greetings and good luck out there
M.D.Master