[Nextgrid]

Debatable - the objective is to play on an attacker's greed and convince them to go for the BTC before any other credentials. Too low of an amount and the other credentials in there might start to look more interesting.

[M3L0NM4N]

Unless you're being specifically targeted because you're a high up position (ex. CEO) I'd imagine .05 BTC is plenty to attract the attention.