I like that it can be used to simulate models quickly without having too much code knowledge or time required with some other programs such as AutoCAD etc., also has features which are great in terms of creating custom plugins (and they have many open source ones available).
The interface could use more customization options but this seems pretty easy once you get into using it - however there's always something new under development so if your looking at learning modelling software then definitely give model center an opportunity because its free! Also i think their support team does amazing work helping others out when needed. Using 3D printing we were able help create prototypes faster than ever before allowing us to iteratively change things up until final product was reached;.