It's definitely a cool feature. I think you did a good job including that Luke, and it's another reason why someone might like MB3 (or more it's not a reason why they might not like it ).
Philosophically- My media management is actually more important to me than my front end because my media in general is more important to me than my player. HTPC is a hobby for me, and I am always testing out new stuff and searching for a better experience with my HTPC. When I started there was only MB2 and XBMC. Then PLEX came, then MB3 (and bunch more but I am simplifying) So it's more important to me that my media is well managed so that in the future I can use new front ends or other options and I just believe that I will probably have my media longer than I will my front end. There is a life expectancy to the front ends. 5 years something new comes out. It's just how software works.
My approach I take with my media is the the actual media is organized and archived on my server before any front end touches it. I don't want to manage that through my HTPC either (or my server because it's headless). I want to manage it on my workstation. Once put media on my server in my media folders it's basically already scraped, renamed, and the folder is populated with art and meta data (for Jriver, XBMC, ROKU and MB) I don't mind if my PLEX, or XBMC or MBserver go and scrape or add whatever special stuff they need (like video themes or music) but the media is organized and named perfectly (IMBD). I don't want to worry if my stuff gets scraped right either. I will worry about that before I put the media into my collection and my front end will see it.
I get that some people might not have a workstation, a server and a HTPC to be able to to do it my way. I also get that some might just not have my passion for this and want to just have it autoscrape. I like that too- but I find that the scraper just does do much better (basically perfect) when I already do it before it sees it.
At the end of the day - my media is simply more important than my front end. I believe I will still have my media even long after I switch front ends or find a new favorite. For this reason I choose to do it the way I do it. I just want to control it hands on myself. I am anal. Scraping is great. I love it. But it's not a replacement for media management. Media management however- makes scrapers work better. That's my opinion anyways. It probably doesn't count for much though
On side question- How come MB3 doesn't use IMDB ??? That's an awesome resource for meta data, movie info, art, actors, and whatever...