I haven't invested into Alcurex, but here are my 5 cents.
The main purpose of running a market is to have a profit. Everybody understands it.
To have a profit you need to have markets for two types of coins:
1. Coins with high trading volume.
2. Rare coins nobody else wants to take to their markets, but you truly believe they will jump to the moon very soon.

With this in mind the list of the markets/coins on Alcurex must be chosen based on other market's statistics and only high volume coins should be picked up.

Only in this case you won't need to spend a lot on advertisement as you'll cover most people needs.

Even if your shareholders want to bring some coins to the market.
They may vote for them because their wallets are full of those coins.
But it doesn't mean those coins will have high volumes and therefore will create high profit.

Somebody who's really smart needs to set some rules and follow them.
You can't let random people to make the decisions on how Alcurex will be running its business.