Why not halve the reward and produce blocks twice as fast instead?
How would this effect the ecosystem aside from having a slight amount more data waste per block than with a larger block (header vs block data ratio)?
I don't see this hurting the ecosystem or the miners...... In fact, speeding up coins helps miners with averaging and consistency in payout times.
...increases the orphan rate, thus increases the amount of hashing power wasted. It also changes everything people have learned about confirmations, because now 2 confirmations provide the security of 1.