@Keel D. Haul, even if I agreed with you, that ship has sailed (pun intended).
Also, I don't agree. An in-game chat will never be as versatile or as powerful as Discord or a similar client. However, there are other, fairly simple things that Plarium could've - and should've - done:
1. Maintaining an official P:ToF (or a more general Plarium) Discord channel would've helped what you want. But it's too late now. The interest, it seems, is already lost.
1.1. Then you add simple frequent games for small amounts of rubies for those who participate there, in order to keep the interest, and the server grows.
2. Public links to reports, so you can copy it as a URL that opens in a browser and shows your report (with any visibility limitations that you impose), easy to share in clients like Discord.
3. Direct support for BH Discords/Skypes/etc. in BH profiles.
Probably a few more things.
All together would be much simpler to do than a proper chat, yet they'd have a serious impact.
But, like I said, all too late for that now, and is there still no interest from Plarium to do it. 🤷