While I'm 99% sure that advertising on this sub-forum and promoting
personal business is against the Terms of Service of AF.com (there is that 1% chance I am wrong), I have to agree that doesn't sound like something that's easily fixable. A straight swap or an upgrade replacement maybe your easiest and best solution. From the sounds of it, you have the stock lenses, no? If you are looking to upgrade, then shop around for the best set of tail lights out there (the ones that YOU think best suit your car and your personality). For instance, you can go with the Smoked look (
clicky), or you can go with the clean indicators look (
clicky). Or you can go with the Euro look (
clicky).
Or you can go to a scrappy and see if you can find some decent stock replacements that you can clean and polish up if you don't want to go with the aftermarket thing... Search Ebay for "E38 Tail Lights".