My GF disagrees with you . And few others I know in person who still use N900.
What about the extra juice withdrawn by kbd leds? Not to say R&D mode can be enabled *when* needed, not permanently. Assuming your USB port is intact.
Do you really think we should use a *browser* to do package management? Come on :s
# dpkg -l | grep hildon-application-manager | awk '{ print $2 }' | xargs apt-get --purge remove