To answer your question, is it practical? No. Some of these suggestions are ludicrous.
Some of the suggested upgrades aren’t even available for a single axle trailer!
If you want to be pro-active and improve the ride and safety of your trailer, replace the tires with a quality tire like Goodyear Endurance or Maxxis M8008. You might be able to move up a size to a tire with a little more load capacity. Regardless what tire you get, have them balanced. Properly inflate them and religiously monitor them.
Install a quality hitch and set it up per instructions, and properly load your trailer as mentioned in the posts above. Get rid of the cheap tires.
Now load up, hook up, and hit the road. Go make some memories.