Presently, the old EU-15 countries already use the same format of drivers' licence. The only thing that differs is the country's name on the front page and the main language (though the term "driving licence" appears in all the EU's official languages). The licence is already valid in all the EU (+ Switzerland and Norway, I believe). Yet, driving rules slightly differ among member states, and examinations can strongly vary from place to place, even within the same country. Hence the so-called "fraud" to get licences where it is easiest (and cheapest) to get them, or to obtain a new one when it has been confiscated in one country.
Belgium is one of the countries issuing driving licences for life. It is certainly convenient, but not necessarily the best choice in terms of safety. One could have a licence and not drive for 30 years, then suddenly take the wheel again. Likewise, past a certain age, when senility settles, it becomes dangerous to drive, even when one hasn't stopped driving.