Thank you, and thank you for all the love and time you've put into the game! SIX YEARS, MAN. SIX YEARS.
Now, for your questions:
1) Players get to keep their badges/progress!
2) Players will get to keep their property and businesses unless they wish otherwise. Without spoiling too much, if for any reason you want to get rid of a house, business, or other property, you will be able to, but the default is that no, you get to keep all your junk. There's also no reason to lose anything in your inventory.
3) Yes. The ledges will always be unclimbable. No ledges for you.
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Now, for your questions:
1) Players get to keep their badges/progress!
2) Players will get to keep their property and businesses unless they wish otherwise. Without spoiling too much, if for any reason you want to get rid of a house, business, or other property, you will be able to, but the default is that no, you get to keep all your junk. There's also no reason to lose anything in your inventory.
3) Yes. The ledges will always be unclimbable. No ledges for you.