There’s certainly some truth to this. As long as it’s seen as an enhancement, let it be a pleasant surprise! Still, these technologies are evolving, so we may see improvements.
I am becoming less optimistic that the 50MB limit will be lifted. On the one hand, devices are getting more capable; on the other hand, there are more PWAs out there competing for the cache.
We are currently looking into the Safari issue; Hongda recently bought an iPhone for SC testing!
We’re very happy to support third-party usage of data, but also bear in mind that enhancing the epub and print support is still very much in the pipeline.
I am hoping that we get our next major upgrade in the next month or so, and the next stage will be the support of the concept of “publications”. Essentially, this means that we will have a dedicated place for supporting what in books is the front-matter and back-matter: introductions, Indexes, and the like. This can be accessed on the site. But it can also be combined into a “book”, whether an epub or a PDF via LaTeX for printing. This will build off our Bilara system, so it will be available for any language translated on Bilara.