I disagree. I use my iPad Pro in very professional settings, thus to me, it's a professional device. It's my go-to device on the road when visiting clients, and many times my go-to device in the office as well. In fact, I use my iPad far more than any other device, including my company Think Pad and my personal Mackbook Pro.
There at present are only five things I do not use it for: Photoshop work, Lightroom work, Powerpoint building, Word document writing, and Excel spreadsheet development and work. Complex video editing I will also many times push off to another, more capable device. The ability to use the unit functionally for those apps creates the gap between a tablet and a "professional" computing device.
Apple needs to recognize that there are many of us out there who are pushing these units into professional settings that need more functionality, capability, and durability. If we don't get it here, we'll get it from another company. We've reached the capacity of what these devices can provide due to the constraints Apple applies to the interface. What makes it all the more disappointing is that Apple has built in the power to do these things into the iPad, but have really provided no path to use that power.
Apple cares too much about security to change... It's opening up more that it did few years ago, but i don't reckon it will as open as the Mac... Never... As you then saying "We want malware on iPad"
We already have that on the Mac. I don't think you can have a closed platform, interaction between any app, AND be security free... because there like magnets repelling against each other.