software for exhibition designers

I’m from a company working on a piece of software that lets you create quick visuals for customer quotes. You can play with it at http:\

My question is whether what we’ve made is something thats useful or simply a gimmick?

Am I correct in thinking the best software for exhibition designers right now are things like autocad 2010 and viz 2008?
Our aim is to let you create professional visuals quickly but to keep it simple, hopefully much quicker and easier than these packages. One of the short-comings of the software is that you can’t create complicated\interesting architectural models; one of the trade offs we made is power for ease of use.

Do you think its useful? are there obvious flaws that we’re missing?

actually its vectorworks and 3D max…

will this prog work for custom exhibit designs or just pop ups?