excellent algo - but not sure it properly weights botnets over CPU/GPU specialization.
heavy chain - monero utxos are some of the biggest out there and therefore probably bad for protection against node centralization (other chains are heavy, but compared to ecnomic activity, monero is lead)
lack of verifiable inflation rate - by its nature, monero make it almost impossible to do this.
those are the ones off the top of my head. would love to have any mistakes.corrected.