Similar to Content Pages, it would be great if there was a field type "ListIt
Item: ModuleName" (e.g. "ListIt Item: Events"). This is to make it easy to
insert a link to a particular item from another ListIt instance.

Let's say I have an LI2 instance "Blog" and another one "Events". I want to add
an event, then add a blog article and insert a link to the event at the end. I
would first create the event, then when editing the blog I'd have a field type
"ListIt2 Item: Events" which lists all events. When I select one of the events,
the URL of the event is stored in that field definition.

I realise this is a fairly specific feature request but I can see the use for
it, so I'm suggesting it. It's not super critical but it would definitely help
me on a number of projects. I also think the same thing could be done to link to
categories.

Feel free to (politely) dismiss if this is not useful or requires too much work.
I'd consider sponsoring development if the price was ok. Thanks.