I sincerely think that endlessly growing the human population is bad. Japan is very crowded, it doesn't need MORE people, and especially not people who don't love Japan with all their heart.

We need to move past the human pyramid scheme of endless population growth, and aim for stability and harmony with the land.

Also, honestly, brown people always cause trouble everywhere they go. They burn flags of their host nation, demand special privileges, commit crimes, are dirty, etc. It's true everywhere they go. And they always give birth to a special breed of leftist who takes them up as pets and begins to defend them in every arena to explain why they are doing so poorly in society. 

I just don't want these people anywhere near me. Nobody does.

In my opinion, developed countries need a Canton system like Switzerland. To immigrate, you have to designate a street and house where you will live (and be able to afford to buy it). Then, the neighbours and local community put you on 1 month probation. After that, there is a community vote, and they can decide to evict you, in which case you're reimbursed for the house value. Even 1 vote against you by a citizen should be grounds for deportation. A repeat vote would be held every year for the first 25 years of your stay.

Moving to Japan is a fabulous privilege, and it should be down to the people who have to live near you to decide if they want you there. If you cause annoyance to even 1 local, why do you deserve to be here?

That would be my ideal, democratic system for immigration.