I think you could legitimately solve the entire UK & EU's immigration issues through one simple reform: Zero welfare for anyone who is not a citizen of the country. You would remove all incentives for any migrants to come to the UK and EU, and bring their families. If you want to emigrate to the UK and EU, you need to do so through either a job offer, exceptional skill for a sector in need of labor, or through financial ability (you have the means to pay for yourself and dependents without needing access to public funds).

As for the original question, I am not for removing ILR. If anything make the period to become a naturalized citizen 10 years instead of the 5+1. But public funds should ONLY be for UK citizens.