Why do you think Chrysler went to the trouble of the 'cab forward' design? It wasn't just becasue somebody thought it would be cool, and most cars for the next 25 years would follow suit. There were 2 primary reasons:
1) It laid the windshield back, improving aerodynamics which in turn improved fuel efficiency.
2) It created the feeling of more openness in the interior, which is one of the things you claim to miss so much about older vehicles. What you see as clausterphobic new interiors with deep dashboards, others see as much more open and comfortable. Different strokes for different folks, which is kind of my whole point. Just because you don't like it doesn't mean there aren't people lining up to buy it because they do.
Modern vehicles aren't my cup of tea either. That's why I drive what I do. But I try not to fall into the trap of begrudging those who buy newer vehicles, or complaining because I can't go order the exact vehicle I want with everything I want and nothing I don't. It's a very good thing to have a choice. Try and celebrate that instead of complaining that the perfect new vehicle for you doesn't exist. If you can't find what you want, then make what you want, or do everything in your power to keep what you like working as it should.
I like the looks of the Challenger very much, but they made some sacrifices to keep that classic design, primarily weight. To fit the proper crash structure into it and keep the proportions "right", they had to make it a giant car, which leads to higher weight and worse performance than the other cars in it's class.
Assuming you live in an area with emissions testing, your vehicle only has to pass emissions checks for the year it was produced, so as long as your older truck is running like it should've when it was newish you're good to go. Older vehicles require more maintenance, but that's nothing new to anybody. You're often still better off paying to perform the maintenance on an older vehicle than paying $400+ / month on a new car payment. $400/month to keep an older Ranger on the road can go a long way, especially if you're doing some of the work yourself. Heck, you could buy a different 10-15 year old Ranger every 3-5 months for that money. That way, if one needed repair, you could just jump into another one and go.