The main gripes I have with it are that it doesn't use all available processors and it doesn't have easy-to-use generalized fillets. I feel like the algorithms

The main gripes I have with it are that it doesn't use all available processors and it doesn't have easy-to-use generalized fillets. I feel like the algorithms must be inefficient even considering it runs on a single CPU. I don't, however, have experience with the commercial products since I'm not a professional engineer. Are there other shortcomings you have in mind?