I think this would be a nice tool if implemented. However, I would add that there should be flexibility. A monthly subscription isn't bad, but to get people using it well, there should be an option for checking views on a single post at a certain cost, probably 0.2 hive (Just saying).
If for instance, you subscribe to check views on this post, you will only have access to see the number of views with the names of the viewers. You can decide not to check for other posts. Perhaps, people will use it more with this feature than a monthly sub.
Yes yes the fee is totally debateable and the idea is also expandable.