In response to those claiming that a hard fork to increase the blocksize limit will hurt the miners' ability to collect fee revenue:
The empirical data we have so far does
not support the notion that the miners will be starved of fees or that blocks will be full of low fee transactions if the blocksize limit is increased. If we inspect the fees paid to miners per day in US dollars over the lifetime of the network (avg blocksize << max blocksize), we see that total fee revenue, on average, has grown with increases in the daily transaction volume.

The total daily fees,
F, have actually grown as the number of transactions,
N, raised to the power of 2.7. Although I don't expect this
F~
N2.7 relationship to hold forever, those suggesting that the total fees would actually
decrease with increasing
N have little data to support this claim (although, during our present bear market we've seen a reduction in the daily fees paid to miners despite an increase in
N.)
Past behaviour is no guarantee of future behaviour, but historically blocks don't get filled with low-fee transactions and historically the total fees paid to miners increases with increased transaction volume.