Post #67 sums it up nicely. TOGA is designed for 5 minutes of use and for that extra boost when needed. Not for everyday routine use. If only Flight Time Limitations were viewed the same. Unfortunately they are not.
An interesting thing with EASA is it gives the commander authority to reduce the FDP and increase rest requirements following a duty. Can't say I have used this so far, but it's something worth putting in your mind.