Increase in price is flawed. All that does is add one day to some trade-route-exploiter's time needed to get a BS. On the other hand, the people who actually RP their traders along realistic routes rather than absolute best $$/minute get penalized heavily when prices go up drastically.
Putting a high priced (non-lootable) commodity on board your battleship as a "permit" is a good plan. Don't want to lose it? Don't fly the battleship when a lesser ship would do. 100mil might be excessive though.
And stricter rules DOES mean more work for the admins. WHo has to handle all of the new rule violations and investigations? Admins yes?
"To gain a hundred victories in a hundred battles is not the highest excellence;
to subjugate the enemy's army without doing battle is the highest of excellence."