HM, while I don't usually comment on 3d app of choice, I must say I can't stand blender ( tried it, nasty, never again), thus I use maya only and could not be more thrilled . I don't believe Open source software, imho, very capable of producing high quality apps of that type, and apparently the 'business' community agrees with that , as max/maya most certainly by a long shot,is the default in a huge majority of studios, and universitities. There is just zero comparison to be made on that level 'Im afraid. That this engine focuses a great deal on blender, is a total non starter for me, because I feel that would lock people in to using a 3d app, that for many is terribly unintuitive.
I couldn't disagree with you more saying its the easiest engine for beginners, as I've seen other 'editors' that while having more /less features than Maratis, allow you to do a lot out of the box with a fairly complete editor , which itself also now supports loading a new level using various triggers.
I only use UDK and cryengine 3 atm, but if I had to choose free based, I'd go with http://irrrpgbuilder.sourceforge.net/, because I like that it uses irrlicht, whicih I think is a wonderful engine, and has some very high quality images/games done by its userbase. At the moment, I'm seeing zero of that, with Maratis. What is there seem very superficial and simplistic by comparison. The forum isn't very active, but judging by Maratis, it's not doing much better, compared to other Open source free MIT based engines like Ogre3d. Ogre3d has been used by big studios and commercial entities, like for example Torchlight 2.
Thx for post.
caj