I believe neither impossible nor too expensive, to have rules and systems to determine the TOW more precisely and safely as we have discussed in an earlier post
I might have missed it, but would you kindly explain how you think its safer?
Your Jeppesen charts has a table for gradient, speed & rate of climb, surely from experience you should know the approximate rate of climb on your aircraft with all engines, cant you compare this to the SID?
Mutt