Hi Michael.
I'm working in Modo at the moment. It's not actually crap as a modeler but I'm seeing why I love Wings now. Wings is perfect for the topic of this thread in my opinion. The thing with Wings that makes it creative is the priority of workflow. First thing is navigation. Well obviously most apps prioritise that to be the easiest and most common task. Modo doesn't. You have crazy double key shortcuts to navigate the view as default. Next thing Wings prioritises its selections. This is the most interesting bit that makes it different. Spacebar drops the selection. It's not a click in the view like Modo. As you change selection in Wings from say verts to edges, Wings transforms the selection from verts to edges and then to polys etc. You always have a selection unless you deliberately drop it with spacebar. I really like that. There is no key command to add more selection to the polys, verts or whatever, you just click on another or click again to remove. It's all mouse driven in the workflow until you need to activate a tool. That can also be moused but you learn the shortcuts or make them which is also easy in Wings. In fact I think as default it has no commands for tools. You create them but this is what you end up doing. I think this sums up the correct workflow any app should have. Confinguring shortcuts in Modo is hell to do. You have masses of selection processes, random, similar, number of edges, length of edges etc etc etc. Last in Wings is the tools in it's system or priority. In Modo tools seem to be prioritised in ease of use with a mass of tools to do complex things instead of a simpler set of tools. What this creates is a workflow where in Wings you can play around very quickly. In Modo and other apps you have to think through what you are doing very carefully. If you're modeling a car or something then you can do that very precisely in Modo. However, the lack of just fun in messing around is why I have no folders of models from Modo but my Wings folder is full of experiments that got interesting basic shapes to use later.
Modo can be reconfigured though. I'm looking into that but it's a nightmare. Blender is much easier to reconfigure.
Both Wings and Modo or other modeling apps require a learning curve. Wings can not be simply learnt really quickly because a lot of the features are hidden but when you do learn it you start flying. It's not a toy but it does look that way at first.
Modo is different in other areas. Modifier tools, animation, matetials, particles, dynamics etc. All these other tools do seem to provide for a lot of experimentation. You can also drive functions with each other as far as I can see. TG2 once again shows it's crippling limits. As far as I can tell it's possible to hook up numerous parameters of different fractals to control each other in Modo. I think it's hooked into channels for animation but have yet to learn it.