Just finished DxD NEW.
While I don't particularly think it's earth shattering, or a masterpiece, I had a lot of fun watching.
Was it successful enough to get us a 3rd Season or will I have to slog through the poorly translated LN's to get to the end of it?
Rias is also best DxD, by the way, make no mistake.
There should be a S3 but I'd recommend going through the LN anyway using the translation from Code-Zeros blog. The translations are bad but they feel worse on Baka-Tsuki.
Normally I'd say to start the series over from scratch but DxD actually tried keeping together with the LN so start at vol5.
The anime is highly profitable.
There will be a S3, rest assured. Not an "if" question, but a "when" question. I'm thinking January next year.