this is my personal suggestion for Arduino 2.0 (if will ever be released).
I think that arduino should come in a single IDE with the ability to design your own circuits (integrating fritzing circuit design) and emulate via PC your sketch (into the circuit design) and see some results (such as LED on/off, LCD panel writing, etc) and some enviromental options such as (light, temperature, humidity, etc.)
well, now I assume you mean 1.0. Techinically Arduino is still in beta
Actually I meant 2.0 because the roadmap to 1.0 is been already planned.