Personally, my block sizes are anything between 2K ~ 4K at the moment, but by the end of the month I'll be aiming at 3K+ blocks.
I'd like your input on this. Extending max age or removing it altogether (like Blackcoin was the first to do, I think) would alleviate this issue and would lead to ever-diminishing blocks (and would require a hard fork). Difficulty would rise exponentially.
OTOH, after a transition phase from small blocks to large blocks during which network security would be reduced, we would again gain network security because inflation would lead to more block. Security/Difficulty would increase smaller, though (the larger the blocks, the smaller the difficulty rise).
Opinions?
I have no math to back this, but my take is that it will make little difference to security. Large blocks will stake faster, small blocks will take longer, but the network will continue to adjust to meet the time per block specifications. I suspect we'll see wild swings in difficulty as people figure out the optimum (for them) method of staking, but that over time it will stabilize. I'm not fully versed in the difficulty adjustment specs for HyperStake, but I believe it readjusts with every block, so the security risk is minimal.