lol superhereo's.
Yes, if you wanna go hardcore, smaller smaller smaller. At least 80% of my blocks are less then 2k and about 50% less then 1.5k to 500.... but you do need a shit ton of coins (100k?) to really make that strategy work.
Honest nodes will only attempt to generate blocks if their stake is below the limit. This cuts down on traffic immensely. Looking out for violators cuts down on DoS as well which has only strangely been recently implemented in some coins. This stems from the fact that when a miner's block gets orphaned he doesn't lose the fixed reward but will merely be losing the compounded interest which is small.