(feature request) line emoji and manual additions

[Reibies]

Sorry this is a feature request rather than an issue I have so feel free to close this or ignore it.
I have noticed when I try and add emoji packs to the line sticker keyboard it doesn't work. I feel like obviously this is due to the URL and such, but it would be nice if there was an option for downloading emojis as well.

In addition to that, I also think it would be nice if there were a way to manually add non-line stickers although I understand this would be way more complicated than making allowances for a different URL but I figure I may state it for possible consideration anyway.