One of the principles of personal finance is the 50:20:30 rule:
Fixed Costs (50%): Everything you have to pay for monthly should fit in half your salary, wherever possible.
Financial Goals (20%): This category should be devoted to some form of goal you have. This can include building your savings, paying down debt, building an emergency fund, and so on.
Flexible Spending (30%): This category can include anything that changes month to month. That can mean things like grocery shopping, but it can also include your entertainment budget, or your hobbies.
‘Targets’ appears to focus on the ‘Flexible Spending’ portion, however the other two categories are also important. e.g. your data shows rent and bills are 75% of your income, which would seriously impact your Financial Goals and your Flexible Spending.
This kind of information is far more powerful in my opinion than setting potentially arbitrary spending limits. Perhaps a easy start would be provide a hint that the total target each month should be 30% of the salary - data which Mondo already had access to.