First thing you have to ask is do you really need better front brakes or do you want better brakes?
If the brakes you have are properly setup , yet inadequate then you need better brakes. A wet road ,traffic, steep hills require judgement and reliable consistent brakes that you trust and know.
If you had no brakes you would cycle much slower, walk down hills not up them and could still get caught out the same as if you had very good brakes and cycled faster.
But at the end of the day you have to be able to trust the reliabibity and consistency of the brakes.
The pro's use rim brakes on mountain roads at high speed, albeit the roads are closed and they are getting paid to do it they must weigh up the risks involved and ride accordingly.
Would you buy ceramic discs for your family car so you could drive a little faster or just drive carefully and trust the car makers original judgement.