Sorry, but that doesn't convince me. I'm not saying that the term is "not widely used", I'm saying it's not used at all, except by you and that you would like to introduce it. Is there anyone else using it? Please show me some references, I'd be interested! I'd also like to see the blog and forum entries you referred to. And I'd like to repeat what I said above: The term "Newspaper spelling" is too generic to be used for such a purpose. It doesn't provide any references to English or British English!

By the way, the only instances of "newspaper spelling" referring to the -ise spelling that can be found using Google are the ones you inserted into several Wikipedia articles.