Well, that wouldn't be impossible to implement since there are ~1000 users using my bot. For example, I would only need to check each profile once per day. Maybe I can do it, but it's not my priority right now.
Only 1000 users? I thought it was more than that. Your bot is quite famous among us, I mean in my local thread/board. I'm really surprised to hear that. Seriously? I mean, only (+-)1000 users!!?? 
Yeah, I agree. Keeping in mind the amount of active users of the forum, I would have expected that bot to be more widespread, keeping in mind how useful it is to track whenever one is being replied to and the merits one receives from others.
I guess there are s lot of newbies who do not take the time to look for the most important/merited threads here in Meta, besides of it, ironically there are legendary members in the forum who still are not aware of the bot. Last year there was a significant scam in the collectors section of the forum and the legendaries there were not aware of the TryNinja bot.
Perhaps, some advertisement to it would not hurt.