Hey there!
Right now the hard limit of 6 GB will remain due to a variety of factors. Of course, we are looking to expand this limit as well as including more reliable upload methods (such as supporting multi-part resumable uploads, for ex). We are exploring a variety of options.
Currently there are no alternative upload methods, but this is also something that we’d like to include in future builds of the marketplace. It goes without saying that having an expanded offering for uploading will also make bundling and asset management much easier. In short, we’re working on it!