Hello Jack,
I greatly appreciate all the work you have put into this hobby and how much of a resource the book is to folks. I bought both copies of the book and would buy the 3rd edition if you decide to do it.
1) I think you should put in Canadian pumps in the book. Like Bowser's 2 different twin visibles and the Clear Vision pumps, etc. (I know it would be a lot of work, but think of the fun you would have touring Canada, lol.)
2) I also agree with folks about adding new pumps to the book.
3) I still think you should keep prices but that needs to be updated as well. I also like the pump rarity rating like others have mentioned.
4) I don't think adding lubsters is a good idea. It would be nice info to have but the book would get bigger and bigger. I think that this should be in another book and with other gas station memorabilia, air meters and trinkets. Also I know that is a lot of extra work.
5) I think you should only use pics if you don't have sales literature. Sales literature may not always be pretty but will save you time and hassle as well as might keep price of book more affordable. Also the problem with pics is that the pump may not be 100% original or may be missing parts. (Cant be helped if you don't have sales literature for the pump, and in that case any pic would be better than none most of the time.)
I hope this helps you out Jack not that my opinion is worth much.
Sincerely,
Easy G. Butler