If I can run Final Cut Pro on my iPad, I will need the extra ram and storage. If I can’t, I won’t. I have LumaFusion too and it’s great but I do prefer FCP. If I’m just going to run LumaFusion, which my 2018 runs fine, then I don’t see the need for 16GB of ram.
Basically if the iPad can replace my MacBook Air for my portable device, then I have no issues ponying up the extra dough for 1TB and 16GB of ram. If I will still need to carry a Macbook with me, I’m going to return the iPad for the cheaper model, because while I still want and will use an iPad Pro, I can’t justify the extra money if it can’t replace a laptop for MY use case.
Me, and a lot of other people, are basically hoping that WWDC reveals new abilities for iPadOS that push it over the edge into that “replace my laptop” territory. For some people it’s already there, and for some people it never will be, but a lot of us are in the middle and this feels like a big year for iPad.