MOC builders: What features you dream to have in a LEGO design software ?

Hi everyone, A friend and I are building a new LEGO design software, an alternative to tools like Studio. It’s still in development, no link and nothing to sell. We want to build it around what MOC builders actually need. So, straight question: What’s missing in Studio (or whatever tool you use) today? What frustrates you the most when you build digitally? If you could add one feature, what would it be? Big or small, every idea is welcome. I’ll share a summary of the answers here once we’ve...