You need to calm down Stability/ visa situation they have got easier if anything, If you have enough monthly income to live here, and the money in the bank for your extensions, then I don't see what your worried about, unless you don't have enough money to live here, or are under 50, for retirement, personally I would never want a business here. I've been here 19yrs. It also depends on where you live.
90 day reports can be done on line or through the post.
on a personal note re-entry I don't need, I live 10min away from where I can do a 90day.