Hello. I read your post and I know how frustrating it is when you want to read fanfic about a certain group/subject, but there is nothing out there. GGD used to have a very strong fanfiction community back in the day. I've posted the first part of the story I wrote almost a decade ago. It has many errors, so please excuse them, but if you like it I will post the rest. here is the link:
http://www.mibba.com/Blogs/Read/545497/Goo-Goo-Dolls-Fanfiction/
Enjoy!