I finished watching the series and overall it was really good, had some flaws but that was expected. I think they did a good job bringing the anime to live action and they did a good job of hitting the hard hitting points from the manga. I would also say though that basically cramming an entire season arc into a one hour episode really leaves out alot of important smaller details that I think could have added alot of details to the main character back stories. I read a lot of reviews and people who never watched the anime or read the manga all seem to be confused on the same things and that is where the little things from the anime are missing.
I look forward to season 2 and I'm curious to see how they will tackle things going forward as the anime only gets more over the top and I want to see how they will handle Chopper because Chopper will need to be all CG and hopefully it looks real good. At least we know that is gonna be the next villain and encounter.