I had an idea for a new type of commodity called "neutron star matter." It would ship out of certain systems with Neutron stars, and would weigh a lot, but would yield great profits. The whole point of this is to create a new type of high risk commodity that skilled trade captains could transport with high risk and high profits, and stimulate the game's economy a bit more.

trading.. err matter? That's like trading vacuum space.

The game's economy doesn't need another commodity that players can take from one station to another for the purpose of gaining credits. There are enough of those. What the game's economy needs is more items that players would be interested in buying from other players. In most cases these will come from manufacturing because not everyone has the interest to spend time collecting, hauling, or assembling something. But in order for this to work, not only do such interesting items need to be available in game, but there needs to be a way to trade items between players that doesn't require both people to be present at a station.

I read this as a suggestion for very expensive samoflange with an even more lucrative profit margin at certain stations. I'll +1 with some caveats:

(1) It needs to be heavier than samoflange, maybe 10x to 50x more.
(2) It needs to be outrageously expensive, between 10 and 100 million credits per CU.
(3) It needs to be limited in availability: limited quantities of it (1-5CU) will randomly show up in the commodities tab of certain research and/or commercial stations in Neutron Star Systems (do we even have those?) every week or so and it's first come/first served in terms of buying it.
(4) It absolutely cannot be something you store long-term: it must have rental fees in the 100,000 to 500,000 credits per day per CU it's kept in a station. This will ensure it is moved.
(5) Sale prices have to be whoppingly high at select stations located far away, and unreasonably resistant to tanking. We're talking 50 - 250 million credits profit per CU.

+1 Lecter.

+1 to lecter, with a caveat:

(1) we need to be able to spend gobs of money on non-permanent things in game, such as fighter escorts, capship command, hiring convoys, and whatever else. If we don't have anything to spend our money on there is little point to increasing trade profitability.

(1) It needs to be heavier than samoflange, maybe 10x to 50x more.
Yeah, the point is to make it extremely heavy, so transporting is a challenge. +1 though, your idea is better than mine.