Character build aside, it would be interesting if you could work some of the instances to leverage the special talents of a burg. Maybe bonuses to an instance or ways to make them easier or at least different. A few examples:
- Burgle a mob for a key to get in to a special area or to a shortcut around tough groups (or maybe to a more strategic attack point)
- Have a special mob deep in the back that only a burg can easily get to and gain some fellowship bonus by taking him out (maybe the other mobs are penalized with lower stat once the boss is out or the fellowship gets a boost in stats)
Something that leverages what makes a burg fun so we have a purpose in a fellowship.