Thank you for your post.
When creating PlusSPec, we've tried to keep modelling efficiency in mind so that if you're using a basic or higher spec computer, larger models can still be used with no lag or hopefully very minimal lag. We've added some connections to the software but anything outside of these I would recommend creating them in SketchUp, then using the BIM Tool to add the estimation info required for the takeoff. These connection components can be saved to your computer for later use so you don't always have to keep drawing them. This is the same for any components that aren't in PlusSpec by default so that our users can have as much flexibility in customisation as possible.
Regarding the Beam Tool materials, we've added some beam sizes for each of the different categories by default, but if you want to add more you can by clicking on the 'Create/Manage' button below the material field and following the prompts. This ability can be done for all material fields throughout the software.
Would you be able to please let me know if you've still got the Wall Tool issue?
Thank you for your recommendations. I will pass them onto the development team for further discussion.
I would be happy to help if you have any other enquiries.