The ability to create high quality meshes without using any addons or plugins. I'm working in an architecture project where we had limited resources so creating models from scratch was crucial! You can achieve great results very fast if you know what exactly do want out of your work (it's not that easy at first). There are some things which could be improved but nothing majorly detrimental as well - maybe more control panel customization would help? Also sometimes there might appear problems after exporting mesh file because certain materials don't match properly even though everything else looks good/works fine otherwise. We were able to use our own geometry instead of importing other people's ones. This saved us time & money compared to purchasing different geometries since these guys aren't willing to share their products freely when paid by customer only.
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