1. Yes
2. Yes. Just need to login to your home wifi ONCE for 30 days.
3. Share RM55 plan with 4 ppl still around ~RM13.75 or so..depend how much you want to charge.

This new rule can share 4 profile within same household + add 2 more friend that is not living with you..bringing total 6 people share..55+13+13= 81÷6=RM13.50...provide the first 4 people is in your house...unlucky, for those that don't have any in their house..they have to pay more..kinda hard to find normal people sub to Premium plan that actually use that account within their household...unless, you live with your friend la..

Or, you can try find loophole. Such as subscribe new account with different email address every month. Netflix may or not detect your IP address of your home wifi bcoz they give 30 days time before block the account. You just need to cancel the subscription before renewal kick in. And then, you just need to create new email account to subscribe Netflix account again.. im not guarentee if this work. Ofcoz sub with their RM55 giftcard...be safe...