I believe people should do this. With even a small following, it's presence would benefit all of cerberus, most of all its own members. The same way BST linkshells are capable of mercenary work, but to a wider audience including the most powerful HNMLS.
It's common sense that the more thieves are at a scene, the more drops you get. It's obvious that people would pay for thieve's presence at an NM, or any place they want more drops. I remember a thread somewhere documenting the drastic increase of kraken clubs dropped on kills for JP a LS that took having a very large number of thieves present for their LoO kills.
It is most likely intended that players of large LS have expancive thief presence particularly for certain kills like that. I'd say the most blantant example of this would be the thieve's knife. It's just painfully obvious as a test to see if thieves can use TH properly as a group before they deserve more TH.
It is surprising that there aren't already competing thief LS fighting over who they can support.