We should only increase the blocksize when absolutely necessary.
blocksize (today) at 1mb filling up (today) and forcing people to submit 0.0002 btc, or 2000bits as a TX fee does not warrant a block size increase.
The blocks are filling up. Some may be spam, but most are legit transactions. Not every block is full, but we are pushing the average higher and higher. The need for a higher fees during peak hours is a symptom that blocks are becoming full. Sidechains could be a solution, but how close are we to actaully using them? Do we have to wait until all the blocks are full before we raise the limit?