This scheme describes the system we already have for some time (tested etc), we wont change it.
No reason to move rewards 1 block further, nobody will choose to ruin the work that provides 100 coin rewards for the possibility to get a bit higher bonus (you even wrote about it!).
Actually there is a minor (maybe theoretical) issue with this thing, especially when it comes to large (manipulative) pools:
Suppose a large pool finds a block with very little or no bonus reward, the pool can old this block and try
to find another with better bonus - block.
when the pool operator will see another block announced, he could try to announce his "bad" block hoping
for it to catch the other block.
Now, there might be more than one smart-ass like this, so each time 3-4 blocks will be announced together
forking the blockchain.
http://listdose.com/wp-content/uploads/2013/08/The-greedy-never-know-when-they-have-had-enough-256x300.jpg