Proof of stake is biggest innovation in crypto since invention of bitcoin.

I would add the following POS attacks to your list:

* Custodial stake

Exchanges and other large services which store user funds in their own wallets gather a very large stake, which often would give them majority power of POS block generation if they were to abuse it.

* Chain freeze

Once a majority stake holder becomes the dominant block producer, they can withhold all blocks forever, bringing the entire chain to a permanent halt, correctable only with a hard fork.

* Shorting attack

A whale takes out a large short of a POS coin at the same time he buys an equal portion of stake, such that his overall position is neutral.

He then uses his stake to double spend by creating blocks continuously (whenever he is permitted to do so) thereby driving the price of the currency down until he is ready to close his short in profit.

In addition, I would say the chief disadvantage of POS over POW is that the security model in POS is much weaker than POW; block generation probability/cost is a constant in the amount of stake you own, whereas in POW the cost of block generation is super linear in the number of blocks. This makes attacking a POS chain cost free under the shorting attack described above.