I wish they still had POW mining - it allows for permisionless distribution. Now with all POS distribution must be bought from exchange, not as fun as POW.
There are pro's and cons to both, as we discussed when we decided to move the switch to proof of stake up by 6 months. The major con to staying as proof of work would be that we would have had to devote more dev time and resources to combat hash attacks, delaying development overall.