It is interesting that maxxxmodelz mentions " I think it wouldn't do much to Poser or DS, because the people using those apps love them for their beginner level UI, and ease of use." personal since Blender changed its UI back with the release of 2.5 is why I finally took the dive into Blender and to be truly honest I have been playing with both Poser and Daz for more years than I can think of and find the UI in Blender easier to use and more user friendly to truly learn than Poser or Daz plus this community contributed to making it worthwhile learning. That being said I do not think much would happen if Blender came bundled with 4 gigs of content or not I think what would benefit Blender Poser and Daz is further integration. The Poser to Blender plug in's development has pretty much come to a standstill. The Blender Daz plug in Khalibloo Panel is showing allot of promise for making morphs for Daz and rigging. Just my thoughts  

Perhaps my use of terms was inappropriate.  I don't know what else to call it by comparison though.  It's not so much that the UI in Poser is super easy right out of the box, but I'm thinking more in terms of the ability to fully customize it according to your workflow preferences, and assign any operation to hokey shortcuts.  I consider a UI where users can customize the appearance of the software through the user preferences, and make it fully modular to their own specific work preferences, an Advanced UI, and advanced software.  I would consider a software which limits you to a particular workflow, or the way you go about things, to be "beginner".  It's not so much how easy it is to learn, as much as how robust it is to customize, once you become an intermediate to advanced user of the software. Yes, I'm fully aware that Poser does have some limited use of hotkeys, as does Daz Studio, when it comes to certain operations like scene navigation, and I do understand that with some XML knowledge, you can customize the appearance almost any way you like, but those things are not exactly part of the preferences of the software, and more or less hacks of the existing interface.  Either way, it seems logical the more advanced and robust the software is, the more UI and workflow features are exposed to the end user.  As Blender progressed, and gained more serious user base, the more customizable the UI became in the user Preferences.  I don't remember all the way back to version 1, or earlier, but I'm guessing there were less UI options in Preferences back then.

Actually, Blender's hotkey shortcuts drive me crazy. I can't remember a third of them and as a result I don't use a lot of them. But now that I think about it, I think I'll find out all the Blender hotkeys, and what they do and write them all down somewhere so I'll have a quick reference book close by. Right now, I usually have to call up the Blender manual.