The guide describing what was worth getting with each rank of the lottery was very helpful, and I miss it very much. Any possibility of it returning?

Eh, I haven't seen the guy who did that guide around lately. So don't count on it too much.
(I may do a guide or a start of one later... you know, if i have lots of time to spare.)

Meanwhile, you may want to see if you can find what you're looking for on the wiki's weapon or armor tables.. Scroll down to the grey part, look for stuff that starts with ふくびき.

I had the problem, and I found the solution, here you are:

http://66.196.80.202/babelfish/translat ... 2f285.html

with google one you can read it in Japanese by locating the pointer over the word

http://translate.google.es/translate?hl ... 26hs%3D3dk