Originally Posted by
Rev. Tiberius Jackhammer
40k has lots of small forces that we're only given a couple of small details about - I'm pretty sure they're intended to be hooks for us to latch on to and expand into something larger, so you can take them in pretty much any direction you want!
And while the Space Wolves lack successor Chapters, one White Dwarf noted that sometimes companies of Space Wolves go "rogue" - they remain loyal to the Emperor and Imperium, but renounce loyalty to Logan Grimnar. It said that some of these may be self-sustaining, but I'd assume they'd run into the same problems that the failed Successor Chapters did.