Would it be worthwhile of us to streamline information on the entry requirements and travel logistics on each WHS on the page for each site? A lot of helpful travel information is already on the site, but I would not know if it would be helpful to centralize helpful travel information so that the information is more readily accessible. I also do not know if it would be helpful to list costs associated with each site, whether or not the costs are mandatory with visitation or to assist with the experience of a site.

Travel information would be really helpful, especially for remote sites. mostly you can find some information by reading all the comments carefully, but standardized information would be easier.
Usually when I visit a site I need to find out:
- where do I set the base to visit a few sites? (usually a bigger place with airport)
- how long does it take me to go there from the base?
- what other WHS or TWHS can be visited while there?
- what is the best way to go there? for me usually a rental car)
- is this site open for visit all year round?
- are there restrictions for a visit? (e.g. guided tours only)

Exact costs would be too much work, as it's hard to maintain the correctness. Further, if you are a true enthusiast, you pay the entrance/transport fee anyway. I guess you could generally say for a site if it's expensive or cheap to visit, but not more.

While I think too that it would be interesting to have, it's quite difficult to accomplish.
We've added the link to the "official website" mainly for the reason that you can find accurate information about opening hours and entrance prices there. It would be impossible to track any changes for over 1000 sites.

What I have added last year is the "getting there" section. I try to update that block every time I have visited a site myself. For example for Berat/Gjirokaster which I visited last week:

This WHS has 2 location(s).

Berat and Gjirokaster are well-served by public buses, whether you're coming from the North (Tirana) or South (Sarande/Butrint). Both are fairly sizeable cities on an Albanian scale. There are two direct buses a day between the two, or you can change for a more frequent connection via Fier.

I now add this kind of information in a free-format type. Maybe standardizing it would be helpful. But don't underestimate the complexity of the many WHS with serial locations.