A minor irritation with the debugger is that the [Evaluator] tab is only for the object of the selected instance variable.
IIUC, to write a snippet of code using a local variable you must edit the code of the method, which dirties it. I've lived with this, but thinking of newcomer first impressions for Pharo 6, an [Evaluator] tab next to the existing [Variables] tab with access to the whole method scope would be really nice. cheers -ben