With the pace he's been adding features, I'm sure he's thinking about it at least.
That said, so we don't keep harassing him, it might be good if he/we posted a simple list with his featured posts of things he's acknowledged are on the roadmap.
edit: did this.
Stuff like last read chapter/page, saving images, notice when page failed to load, retrying failed pages, etc, are not specifically on the current planned features list, but seem like nice things to add eventually.
Latest version has added an orange lightning bolt when loading the next chapter. Nice touch.