I have recently got into 3D printing and there is much more to the software than you would think. Infills, temperature control, fan control, supports, skin thickness etc etc. Add in the lack of undercut support in Aspire (understandable given its purpose) it would be a whole new piece of software really.
The other thing is that sawdust and molten plastic don't play well together. The amount of cleaning required between switches would be a nightmare.