Each Connect<xxx> method returns a different type of connection that can have different properties and methods.
There is no ConnectSequenceList method on the ExecutionViewMgr because there is no "list" of sequences that corresponds to an execution. There is a "callstack" of sequences, but you connect that to a list control with ExecutionViewMgr.ConnectCallStack, which returns a CallStackConnection. Currently, the CallStackConnection doesn't contain any methods to add columns. This is because we didn't expect that to be generally desired enough to warrant adding it as a feature. Of course, you are free to display the callstack in your own control with as many columns as you want.
