My 2 cents...
As for reproducing the analog experience... I have not seen an e-cig device yet that can duplicate the feel of a cigarette held in the hand or lips/mouth. The weight and balance of these devices precludes it. They are way heavier than an analog and their weight is at the battery end. You can paint the battery white, put a light brown cart on one end, and add an amber LED to other but they have never mimicked the feel of a regular cigarette - at least for me. Try holding an ecig in your lips. You'll see what I mean. They do a better job of mimicking a heavy well built ink pen. As far as the eGo is concerned - I'm familiar with Marlboro Lights, Marlboro 100's, even bummed a Virginia Slim in desperation, but I have yet to come across a Marlboro Big and Fatty (or Big, Heavy, and Fatty). So I can't see how and eGo could ever come close to reproducing the feel of a cigarette in the hand.
What is important to me is that what I inhale and exhale is as similar to the smoking experience that i can get. I could care less what the device looks like. If it helps psychologically, then think of a box mod like the Ali'i as being more like a pipe. When people stare at me when I whip this thing out in public, I stare back at them with crazy eyes and say "What?... It's a crack pipe... Haven't you ever seen one before?" Of course I don't recommend this, but it does tickle my warped sense of humor.
I started over a year ago with a regular 510 atty and battery. It failed to get me off analogs. The mess and hassle made me loose interest. Fortunately, when I recently decided to get back into vaping, I knew what I was looking for in terms of usability and performance. I looked around and finally the Ali'i came out. It was exactly what I was looking for. I skipped all the experimenting with other in between devices that one might go through to get here. The result is that it saved me a lot of dough. Essentially the Ali'i has paid for itself in that regard.
So if a newbie is not looking into e-cigs for a new techno gadget hobby, but just wants something that's almost as easy as plucking a cigarette out of a pack, lighting it up, and smoking away, then I have to say that a bottom fed box mod comes very close. There's little fuss, muss, mess, or hassle. It works and works well. So if you want to avoid all the trial and error associated with going through various devices and want to just get something that will get the job done, then a bottom fed box mod is not a bad choice - in my view.
About the cost of something like an Ali'i. Yup, there is some cost associated in getting the box mod and all the other stuff to get set up. But what's it worth to you to get off analogs? I asked myself the same question and my conclusion was that the cost was worth it - in fact cheap - if it got me off cigarettes. So far so good.
About bottom fed box mods being a niche... That's probably partially the result of the lack of information. Secondly, it's going to be hard to corner the market with a custom hand crafted device - as others have noted.
So do I think this post - and bottom fed box mods - have value for newbies? Sure. The only thing that I might include, in terms of advice, is that they study up on the safe use and charging of L-Ion batteries.
Edit: Just thought I should note - I was enjoying my Ali'i while writing this reply. MMMM MMMM good....