Let me weigh in as a dev.
Old trucker vs new trucker
The point of 2 jobs back in the day was to test then new script, hence the lower income which was later slightly increased, but remained low because of an issue how the income was calculated, how this was resolved in recent update will be said further down.
"Old trucker", won't be coming back, reason is quite simple, it's deprecated, has less features, no diversity and generally is inferior to the new one.
Judging from your topic, you seem to be a frequent trucker, with that being said, I am surprised you made this topic 2 weeks ago and somehow did not notice that 4 months ago (when the most recent trucking update was pushed) we included illegal trucking (granted a little different), increased payments, included truckers in the fuel economy and added bonus for hard to reach spots making the entire struggle more worth. That's how the payment issue was aided.
I think many people are looking at the money aspect too much and were too spoiled by the broken balancing we had back in the days that their entire argument of why something is shit, is because it's paid less compared to 2-3 years ago.
Captain job was removed due to a crippling bug many of our players refused to report in time and rather abused it, and generally was often more broken than it worked.
First we removed shooting because how stupid and overpowered it was when 15-20 people started spraying their guns, then we removed glue from regular passenger vehicles and restricted it to platform vehicles and pickups, such as Picador, DFT-30 etc. as a general vehicle ecosystem improvement, which encouraged players to use more vehicles and strategize their means of transportation more.
We have thousands, literally, mapped vehicles around the map, yet gangs and squads would use only 1 out of dozen in their fleet with everyone being glued on top. I understand why many liked this, out of practical reasons, but thousands of vehicles mapped around the map, which do put stress on our players and server mind you, should be used once in a while.
ALT-GR locking feature
You are free, as anyone else, to suggest a feature or open a discussion topic about one and we greatly appreciate it. We can not go through every topic and respond to every post because we have to utilize our free time and prioritize tasks if we want to accomplish anything. That doesn't mean we don't read suggestions.
Yes, manual choice was worse. Criminals preferred few out of many locations due to low distance of travel, hard access for cops etc. Old House Robberies worked also automatically; for which was a great cry for to bring back, reason it can't happen is see first topic of my post.
We wanted to utilize more locations, spread out the players and break the monotony of same locations are few reasons.
There, hopefully I gave you answers you wanted. I'm sorry we can't cater to all, but we are trying to find the best golden middle and it is not as easy as many think. "Reverting" and "bringing back" is not a solution for everything.