After running gooseneck trailers for the last 20 years, I wouldnt go back to a bumper pull for bigger jobs. For heavier loads, a GN puts the hitch weight further forward over the rear axle, greatly extending load capacity. Handling is greatly improved, too. I can back my GN’s up at a 90* angle to the truck, where a BP is limited to about 45*.
A GN allows the operator to use the full towing and GCWR of a truck, where a BP does not utilize full GCWR or towing capacity. Another nice GN feature everyone should have is a deck on the neck. An 8x8 deck on the neck literally gives you another truck bed worth of storage for buckets, bale spears or other loader mounted attachments, tools, wheelbarrows, whatever you can strap down.
Bumper pulls are fine on bigger trucks, like dump trucks since thats all they can tow, but when it comes to lighter trucks like a 250/350/450/550/5500 or anything with a non dumping bed, a GN gives you so much more versatility, load capacity and storage. A bumper pull will give you your full bed, where a GN will leave you with about 1/2-3/4 your bed, but the deck on the neck gives it all back and more.
I rarely see a GN owner switch to a bumper pull, but I see almost all GN owners used to be bumper pull owners.
Heres my 35’ GN with 8x8 deck on the neck.
Now I have 43’ of storage platform.
Heres one of mine with a dual bale spear up top. I could store much more up there. Anything a person or a tractor loader can stow up there could be carried.
I own a small bumper pull trailer and its fine for what I use it for. But if the OP sees “expansion” in his future, I’d guess a GN is also in his future.