1. kill all dead coins
2. hold active devs accountable for premines with public ledgers. no proof of premines being used to benefit the growth of the coin, no adding the coin to the exchange.
3. send new coins to XPM market until they can mature, then promote them to LTC or BTC market.
4. stop adding scam/shit coins.
5. only add new coins when its clear that the coin will benefit not only the exchange but the community as well from being added to the exchange.
(1) If there are buyers, it shows that people can still sell. If the coin is dead there will probably be a massive buy/sell spread.
(2) Yes. 100 times.
(3) Why the XPM market? IIRC the LTC market is for coins whose prices are too low for the BTC market (e.g. CENT got demoted because of low price). I'm not sure what the XPM market is for, though.
(4) Same as (2).
(5) Double-edged. Adding it to an exchange gives a coin a value, but also gives an avenue for people to dump.
Cryptsy has no obligation to do any of these - they are a company, and companies are profit-oriented. Nevertheless, it would be good if cryptsy strongly examines the coins before adding them. (IIRC in recent times they are scrutinising the coins and rejecting/delaying/delisting those with premines, see ORB)