New Alt coins

Miners are fickle and alt-coin makers mostly just want to make a quick buck.

Alt coins were made as platforms to explore aspects of crypto currencies that could not be applied to bitcoin or were considered experimental.
Later after the release of Asics it became a haven for people with small rigs to mine profitably. Of late though the new crop of forum members have begun abusing and devaluing the idea of altcoins by cloning and not thinking things through.

Innovation may not be everyone's strength but a well thought through coin possesses more potential in the long run to become a dominant coin if you support it.
A clone that addresses the issues of the parent coin is a valuable thing, it may be adopted slowly (no quick buck) but over time as people realise the merits of what you did, they begin to join you.

Alt-coin making is not a compettion to see who can create the fastest coins or reduce transaction times by reducing confirms. Improvements on previous ideas is a better idea, by watching coins that already exist and addressing their issues you stand a better chance of making the right impact. Don't mind the FUD and flash miner looking to make a quick buck. The heavy weights of most coins that have been around over a year spent a lot of time mining coins that were considered worthless, but the merits of those coins shone through the crap.

1) microsecond blocks would be a novel idea, but it is not feasible due to network latency. A block has to travel the network, it cant be done with today's tech.
2) Large rewards per block draw small minded crowds that love to see many zeros, but if you know your economics, you'll understand that scarcity makes value.
3) A clear Launch is good, premines are frowned on because of the sketchy nature in which preminers behave.
4) Try to learn from previous launches, there is always pointers on what people want to see implemented.

Some coins have future, if your idea is good enough, your coin will survive almost anything.