I realize there's plenty of issues with LF. Can i pleease please request an adjustment though to the existing code to correct a major deficiency?
PLEASE eliminate NEGATIVE PASSENGERS. I've had numerous routes when "forcibly reevaluated" by market entry of another airline go into daily losses. This is normally and all but well-and-good, except I could run a Dash-8-300 at 0 euros a ticket, and encur no gains or losses whatsoever with 100% loadfactor, YET if i charge 50 euros a ticket and someone moves in on the route, it can drop, somehow, into negative daily income. My only (relatively weak) guess is that there are negative passengers now flying the route (a physical impossibility).
Just please, install a small safeguard on the LF script, albeit temporarily, stating "If ($routepassengers <0) $routepassengers=0". I don't mind (exceptionally) having to readjust these routes, i just mind when a dash-8 or saab 340b is somehow losing money on a route that should break even at 0 euro tickets.

EDIT: Please make it so I never see this again:
View 15364 Anchorage Akiachak Airport Dash-8-300 9 0% €-34,285 Close
especially when inserting 0 as a ticket price yields
Warning: Division by zero in /home/stephenm/web-root/create_route.php on line 359
Warning: Division by zero in /home/stephenm/web-root/create_route.php on line 359
Financial Results:
Revenue: €0
Costs: €0
______________
Total Profit/Loss: €0
Loadfactor: 0%