About "daw": it looks like I forgot about that. To be fixed, but right now use "diw" instead. (Please create a github issue if there are some other important key bindings missing.)
At the moment, I don't know yet about auto-reloading in IPython, but that's worth looking at.
About the PYTHONPATH, that's easy to fix. (Should we always add the current directory to the path in a REPL?)
(Should we always add the current directory to the path in a REPL?)
Please also have a look on my suggestion for the search facility: https://news.ycombinator.com/item?id=8391647
It would be really helpful, to just search for some keyword and have the last occurence (for example import) as template without the need for going back the history by hand.
In Vi-mode, use ControlX-ControlL after typing the start of the line, then you have line based completion, which also completes from the history.