I actually agree with removing the tag NTR, because it's apparent that few really understand the complexity of those Japanese jargons: Netorare, netori and netorase. It would make things much easier by replacing them with Cuckolding, female pov cheating and open relationship.
The complexity of the Japanese jargon is because they describe emotions, not actual acts. Netorare is when one feels pleasure along with displeasure from the feelings of anxiety associated with nonmonogamy (either real or imagined). Netorase describes when the protagonist doesn't have that associated angst with the nonmonogamy and only experiences pleasure from the experience. The thing is, two people can be put in the same situation and feel completely different things, so if it is netorare or netorase is really dependent on the point of view of the observer.
I think your categories are much better tags for describing what one might expect within a given game, as they describe the activity. Considering the fuss these games seem to cause, I feel like additional tags like consensual nonmonogamy and nonconsensual nonmonogamy would also be valid additions.