I think you are wholly incorrect in that.
The mission type given depends on what state the system is in. So kill ship missions happen when state is in war, deliver food is when system is in famine, medicines in outbreak etc.
The destinations are based on what remote system status and economy is, so you ship farming machinery to agriculture systems, minerals to refinery systems etc. It doesn't revolve around trading item prices, this may have been a pre 1.1 mission architecture but definitely hasn't been like that for as far as I remember (some knowledgable personage will probably confirm this in a subsequent post).
So I currently think that missions are dynamic and based upon the economy, state as well as standing with the faction, the type of "go here and do this" changes as the system state changes and that is affected by player actions.
You seem to be placing more importance on the method a mission is given to you (procedurally generated) than what the missions get you to do, which for me should the bit that is fun and would need to be discussed as to what makes a good pick up and deliver mission?
Personally, I think missions are as good as they are going to get and don't need much love apart from bug fixing. How they get created is something I don't give a flying monkeys about as they change according to the location they are created.
I would much rather the periphery of what Horizons has delivered get some focus for 2.4, exploration, reasons to revisit discovered systems, SRV customisation in a way like ship outfitting, stellar objects that are risky to encounter (black holes, neutron stars, heck even scooping stars should be a bit more dangerous), crime and punishment. A lot of what my original post questioning your issues listed.
Although seeing as people have wheeled out the old steam 'stats' no further clarification of what really would excite you beyond using buzzwords for programming will probably occur...
"deliver food is when system is in famine" what other task can you do when a system is in famine,if you want to influence the system out of famine ?
You are limited to your daily minor faction influence cap and one set of missions ,