Thanks for the feedback, good to know that people are utilising the power and upgrades will benefit them.When it comes to work, I would only choose to use an iPad over a traditional computer if it gave me an actual advantage. After years of waiting, the iPad Pro finally does that.
Editing directly on the screen cuts my editing time down by a significant amount. This is possible because of Lightroom's Creative Cloud. Sitting at the shoot or a cafe with my iPad in my lap, swiping through photos in rapid succession using gestures to choose my selects and then directly manipulating sliders on the iPad to adjust settings beats sitting at my iMac doing the same with a mouse and keyboard. Most of the work can be done right in Lightroom for iOS and on occasion, I switch to Photoshop Fix for iOS to clean up an image that needs it and I use the Apple Pencil to get pixel point precision that I can't achieve on a computer without a Wacom tablet (sold mine).
So yes, I would and do use my iPad at big jobs. At all jobs. I haven't upgraded my MacBookPro (bought the iPad Pro instead) and it sits unused in its old laptop bag in the closet waiting for me to actually find a situation where I'd need it instead of the iPad Pro. I even use the iPad Pro when I'm home and the computer is right there. It's measurably better for my line of work.
Uploading and editing RAW photos works without lag on the iPad Pro but I do feel it pushing its limits because it warms up noticeably and I have just enough space (128GB) to upload and edit a big job before I get on WiFi and it offloads all the RAWs to the cloud.
So... once again, yes, bring on a more powerful iPad Pro. It's the future whether or not Mac traditionalists (I was an early Mac adopter) want it to be or not. The true measure of success in any field is one's ability to adapt to and take new technologies and methods to gain an edge over those who can't or won't.
Have a good Christmas mate !!