I would like the possibility to split the feed items into multiple pages.

I can't display more than 20 items per page, because otherwise it loads too long. Then it should be possible to have the next 20 items on a second page, and maybe another 20 items on a third page.

Could you implement this feature?

I like this suggestion.

Couldn't you implement that feature, please?

Push.

Interesting feature, I do not have the availability to implement the feature, but you can load all the items that you want and create pagination with javascript.

you can load all the items that you want and create pagination with javascript.

How can I load the most recent, say, 15 Items?
Can I do it without Javascript too?

Yes, indeed.
I also assume joomla is missing this feature and should be added