I didn't think it was too bad. I tend to enjoy these types of projects though. I did manage to puncture the battery slightly at one point, Luckily I thought ah

I didn't think it was too bad. I tend to enjoy these types of projects though. I did manage to puncture the battery slightly at one point, Luckily I thought ahead and let the MBP drain to ~0% to reduce the chance of a lipo related fire. So nothing happened. I wasn't gentle about removing it, if you took the time to properly heat the glue and pry carefully it could be done with no drama.