Hot damn, that's looking really nice! I like the new PoV, and you have a much better sense of distance and scale now. The aurora to me seems a little over the top, this is either a really long exposure, or a geomagnetic super-storm: http://en.wikipedia.org/wiki/Geomagnetic_storm#Definition_of_a_geomagnetic_storm
Also it looks like the image overall has been tonemapped, which is fine, but it seems to have possibly done some undesirable things to the highlights in the auroras. If it hasn't been tonemapped, perhaps it's something to do with the mix of colors in the aurora - not impossible, but again a little over the top. Generally the red areas tend to be at the edges, in the less intense areas of the aurora (in fact you hardly ever see super-bright red aurora). The green is what gets really quite bright, so having red within the brightest area may not be ideal.
Finally, yes the foreground. I will say this: mostly you see flowers and other really happy plants in the late spring and summer. However, during these months daylight is much more limited, to the point where in mid-summer it basically never gets dark. So the best time for viewing aurora is winter-to-spring (and maybe late fall). Which is why you mostly see barren or icy foregrounds in Iceland aurora shots. Conversely, in the winter the daytime is very short, and even when the sun is up it is relatively low on the horizon, meaning it doesn't provide as much warmth and energy for plants. Long story short, what you have here may be possible, but unlikely: http://www.icelandguest.com/travel-guide/about-iceland/iceland-travel-faq/#When%20is%20it%20daylight%20in%20Iceland
One thing I'll say is that this actually reminds me a fair bit of the mountains around Jökulsárlón, the Glacier Lagoon, and if you could successfully depict the lagoon in the foreground with icebergs (don't worry too much, at night the subsurface scattering is much less of a factor), that would be *tremendous*. It's an ambitious thing to tackle however, that must be said. I've attached a couple of as-yet unpublished aurora photos I took at Jökulsárlón on my trip last March for reference (but there are of course better photos on the Internet, try "Jökulsárlón" and "aurora" for keywords).