First of all, there is nothing wrong with prudent and appropriate raw data departures. Some people seem to think that the wing bolts are connected to the FD switch. If Boeing thought that raw data flying was dangerous, they wouldn't fit the switch... Suggesting that all the performance calculations are nullified by flying raw data displays an immense lack of confidence in the individual's flying ability as well as their understanding of how everything works.
Secondly, the received wisdom is that the pitch attitude is not to exceed 20 degrees NU. The reason for this is to give you a decent opportunity to get the nose down without rapid speed loss if an engine fails and also to allow for wind sheer - it has nothing to do with comfort levels. Going beyond 20 degrees is needless and most companies' OFDM systems would be pinging off. I certainly wouldn't be happy with a colleague who did it without very good reason. Pitching higher sounds like show boating to me.
Third, the FD initial 15 degree NU command is only a rudimentary aiming point for rotation, and it guarantees nothing. It is a conservative pitch angle which will be modified once the FCCs catch up with the aircraft's actual performance. Commands above 20 degrees should only be followed to the 20 degree line.
Fourth, any pilot that blindly follows the FD without "looking through" it to verify against the performance data that suitable attitudes are being commanded is a fool. FDs are very useful but not infallible and they are reactive, not pre-emptive.
Fifth, FD commands aren't always displayed proportionately - if the FCC thinks you are not responding fast enough, the commands become exaggerated to gain your attention., and if you follow them fully you will be over-controlling the aircraft.