@joey_tbf
1) That is beyond the scope of this addon and would require a rewrite
2) Working as designed (as per the resource description)
3) I can add that option
#3
At the moment i believe your add-on automatically grabs and posts the: "[Gallery] BB Code"
It would be good if you gave us the option that we could instead force it to grab and post the "BB (With Thumbnail) Code"