I think Mike Hearn is way out of line with all his actions.
Yes, SPV clients and micropayment channels are preposterous! 
Edit: I just heard that he's working on getting Tor on by default for Bitcoin wallets as well! What a monster!
TOR integration is potentially dangerous at this stage because it's very low hanging fruit for media outlets/vested interests to attack.
If we delayed TOR integration until bitcoin has gotten over many of these attacks regarding its 'anonymity' and 'links to criminal organisations', then they won't be able to lump us in with 'paedophiles' and 'arms traders' quite as easily.