Theres a strategy to follow in TDS?
Well, for starters, I guess once you've filled up an Appartment floor with 6 residents you have a 9 rating in the shop they're working in, then any visitors to that level are of no benefit to you. So I when a Mover VIP turned up, I'd rearrange the Apparetment levels if possible to alays be the odd-numbered levels. That way, assuming it's truely random for which level new arrivals go to, hopefully it ensures an even chance of the new arrival generating you money.
Similarly, can easily tell if i want to bother taking them to the requested level, or down to an Imperial level where they can be put to use. (A better plan might be to only put the appartment levels in the top half of your Death Star - once filled you don't need to take the elevtor to visit them again, so you can therefore all you're elevator movements are quicker as you'll only have to travel the first half of the levels to get to the revenue-generating levels)
Plus - don't spend bux on anything by elevator upgrades, at least not to start with.
Also, keep hold of the Big Spender VIPs when they arrive. Get the Marriage level (it was the level that produced the highest number of 3-coin item of all the levels I saw while playing it. I guess later in the game it will be superceeded by a better level). While you manage the stock of all levels, pay special attention to the Marriage one. Try to get it so that you run out of 1-coin and 2-coin items close to when you'll complete fully stocking the 3-coin items AND have a Big Spender VIP waiting on the first floor. As soon as the 3-coin items are avilable and there no 1-coin and 2-coin, use the Big Spender on the Marriage level, and they have to buy all the 3-coin items, netting a big chunk of coins.
Fortunately the 3-coin item on the Marriage level takes so long to re-stock, it seemed to me that nearly always another Big Spender VIP would turn up before the the item was stocked, so you can do it over and over.
i didn't get around to working out the coins per hour rate though to see how it compared to some of the other levels, but it seemed to be the best on the quick rough maths i did in my head at the time