Lifting anything with the FEL transfers weight from the rears to the fronts.
Tractors only have brakes on the rears.
If you are using a tractor as a jack of all trades, like many compact tractor people do, you need 4x.
Yeah, the thread I linked above was pretty thorough on the limitations and possible dangers of the 2wd FEL combo. It covers exactly what you're saying. Ballasting on the 3pt and rear wheels can help but most wouldn't consider that a replacement for FWA/FWD. My experience with fire apparatus has taught me every machine has it's limitations to work within. As one poster said, if you start sliding down a hill with a bucketfull and don't have the experience to drop the bucket to stop you could get yourself in a heap of hurt!
When it comes time to buy it'll come down to needs and budget. There will be a big difference if I have 5K or 10K to spend, machine including implements. Depends on what the financial department (read wife