A Train Disruptor is not necessary in my opinion because (game mechanics) anythign that would need the TCD can't attack your trader or miner. As an escort I go with the pvp-ish mosqito and I've never been in a situation that demanded more CD-power.
Put in the alternative routes. This is important if you run into a massive blockade.
Fees: I demand 2-5 millions for ore runs (Dublin-NY). A 2700 units Hegemon is closer to 2 millions, a train (5000 units) closer to 5.
The point is: Your play must enrich the play of the trader so much that he rather chooses to have some nice and tense rp with you than to pay the odd pirate 2 millions and move on. It's your job to be a good roleplay provider. If you do it right, people will come to you and ask for escort.
