To reply to the OP's question of what I find makes RV life easy.
I use the Andersen no sway hitch which is way easier than moving around a standard WD hitch.
I keep my chocks and stabilizer blocks in the front of the storage compartment, first out last in, so I don't have to remove a bunch of stuff.
A small cheap carabiner attached to the hitch where the chains hook up makes an easy and quick place to attach the breakaway cable.
I put a giant level front and center on the toy hauler so I can see the side to side level of the trailer from the driver's seat.
Added hooks to the front wall of the passthrough to hang propane lines, extension cord and other things that I use often.
Keep the junk out of the trailer that's not needed or hardly used so I don't have to sort through a bunch of useless stuff.
Probably the biggest thing is if something is needed for the trailer we purchase it and don't take it out of the house so we're not packing extra stuff back and forth. In the spring the trailer is stocked with dry goods, canned goods and paper products so it's in there. The wife and I can be ready to go camping in less then a half hour and it takes us about a half hour once we get home to be unloaded and done. 10 minutes of that 1/2 hour is me loading and unloading the ATV's.
I'm only 48 years old and can still hold my own but I like things organized and easy as I have better things to do then spending my time walking back and forth from the house to trailer or wasting precious camping time messing around with stuff. My wife might say I'm a little anal on the organized deal but I know were most everything is unless I put something in that one special spot.