Conversion of RichText to html is sorely lacking. Please buy Midas and integrate it into Domino, Notes, Nomad and Nomad web app (PWA).
This would also provide an excellent API for handling RichText. Midas has been been in productive use for decades, and is proven technology. Please HCL, do not reinvent this wheel.
I spoke to Ben Langhinrichs of Geniisoft, he is open to the idea. Please vote!