Oh dear. Sometimes people need to think before they type!
It made me laugh.

Is it basically "lots of hoop jumping and red tape for less payout"? Or is it simply trying to cut down on people working the system and providing greater care for those who are genuine?
Both. Those who are tying to earn more and get off benefits, are saying they will get more money under UC as there is no cliff edge drop in benefits as they earn more; up to the point when they can get off all benefits.
Those working the system will have less money and more hoops to jump through.
All of these income based benefits are now under the same rules with UC. i.e. the cut-off for income based benefits is 16k, but someone with thousands of pounds in savings but a lowish income and say a landlord with lots of properties, could claim Tax Credits. As could someone who had their own business and a good accountant. Whereas someone with no savings, capital, or house, but who had a salary over the Tax Credits threshold, could not claim TCs. UC has a cut-off of 16k and that will now include all savings, capiltal, equity in properties not their main home etc, in the UK and abroad.
Plus all the anomalies have been written out. i.e.
Tax Credits is only claimed yearly and is based on what was earned in that tax year. This meant that someone who lost their job, took a lower paid job and claimed the Tax Credits benefit, then a few months later got a better paid job and ended their TC claim, had to pay all their Tax Credits back! Whereas those that didn't try to earn more and claimed Tax Credits year after year, could keep their Tax Credits. This will be stopped as UC is claimed monthly and the claimants have a minmum to earn each week.