I'm really enjoying the Beta, but I'm also a big DC fan - Not too many bugs for me... Unfortunately my mate cant play for more than 2-mins without a freeze up... Devs should have it fixed soon I'm sure.
I would definitely love to own the full game, but if there is a monthly subscription then I wont bother. I CAN afford it, but I often go 3 weeks without playing games (Life/work/kids/etc) so I don't want to be paying when not playing. I don't work so that I can donate money to Sony for nothing.
Make it free for PSN+ and I'll grab a copy of DCUO 4 sure.