The beauty of the new coin is that, people staking really make out if they leave their wallets up all day, but wallets don't get nearly as clogged up with so many stakes.
People with fewer coins have a much higher chance of staking successfully during peak periods, when rewards are highest.
A worthwhile number of coins are mined, and the mining is consistent across the board, making blocks consistent and further hardening the network.
It is designed as a balance for all mentalities - min/max, consistent stakers, and dedicated miners.
The whole concept should encourage a healthy, permanent network.
Minute and a half blocks are plenty fast for most purposes. Anyone that wants to rush the market or otherwise complete a transaction more quickly than normal can plan their transaction to take place during a flash period. However, if you did you'd be doing so at the expense of the coins you could have staked yourself during that time.
So it's got a game to it. A little play, a little fun, a little angle people can try to work.