Linksys Wireless Router :: E4200 - Parental Control Features Lacking

For a high end wireless router like the E4200, the parental control features are lacking.  The other features and performance of the router are great, but why not provide outstanding router based parental controls?  With the latest firmware (1.0.03) no new parental control features were made available.  Currently, I can restrict by time, which is useful.  I can also restrict 10 websites - which is not useful.  I certainly don't want to maintain a list of the 10 most offending websites that I want to block.  First of all, 10 is not even close to being enough.  Second, and more important, there should be a way to subscribe to some service that automatically updates the list of blocked websites based on content.  I would not mind paying for this service if the cost is reasonable.  I know that there are software "solutions" for this, but my 6 year old easily found a way around this sort of solution.  I have tried many with no success.  The only real way to enforce parental controls in a home network is at the router.  I would love to this feature available on this high end router.  There are a few lower end wireless routers that offer this service, but the other feature set is poor.  I want to have my cake and eat it too.