Mods started off to simple creation and now turning to code based mods. What does the future of modding here bring us to?
Everything will be possible With the repository ingame, mod subscriptions and automatic updates of mods, things will become a lot easier to use.
If you're a student you can get Autodesk 3DS Max for free from the Autodesk website, it seems to me a lot more straightforward to use than Blender.
Doesn't matter what you use, 3DS Max or Blender, as long as you are competent and confident using it. Blender may have a steeper learning curve at the start than 3DS Max or Maya, but can be extremely fast once you get the hang of the keyboard shortcuts. I would advise against using sketchUp for car models as it can often create very poor polyflow and you will most likely need to use Blender or Max to tidy it up for the game anyway.
Most difficult part of Blender is that you have to forget about using mouse, only things mouse is good in Blender is for view point manipulation with middle button down and selecting with RMB, you can also confirm selections with LMB, but other than that it is pretty much keyboard driven software where no command should be attempted to make with a mouse, even if there would be menu and button, it probably will not work as well as keyboard command. Then there are some things that goes beyond any sane logic, but it does make up all that with how easy it is to make model in it. e(xtrude), w(eld), f(ace), shift, n (only once at beginning), x(delete) and dot from keypad to look closely, xyz for axis locks after e, tab to switch between editing and admiring your handywork. i(nset) to make windows etc. Ctrl-B(evel) for making, well, bevels. Ctrl-Z undo, even if you cancel some action with esc, you probably want to hit Ctrl-Z once to really cancel the effect. Put them up next to screen, remember that copy paste works wonderfully to get vertexes to line up (that is why n at beginning). For someone not done 3d modeling stuff, I think doing something simple as this weird bird might be good starting point, I just started dragging, extruding and welding of that default cube and suddenly I had that, no any plans or idea, you start dragging stuff around and you end up with something, it does not matter what as that helps hand to learn those commands and to train brain to see lines, understand how those edges and faces shape an object: Making something from blueprints is really hard, you still need to use coordinates to get sensible measurements, so I recommend first learn without blueprints, it teaches so much more about important things, making something from blueprints is for later I believe and even then I would think them as very rough guideline for proportions and nothing more. I like his tutorials when I need to do something I don't know how, but there are plenty different ones in YT https://www.youtube.com/playlist?list=PLda3VoSoc_TR7X7wfblBGiRz-bvhKpGkS however it is more important to mess around. Future of mods? Plenty, I hope, especially I hope to see bringing game further what is financially reasonable for devs, adding new features, making more complex simulation etc. That might be really a thing to separate game from others