It's limitations? The Limiter. I feel a bit condescended to with the slow release times being called "vintage". I'm assuming they figured old gear= old dried out capacitors but while I'm not at all an electrical engineer I do know how to recognize my equipment needs servicing. I get it, sure...but I feel like I'm being taken for a rube.
Next? The "Pultec EQ". Come on. Sounds nothing like the insanely signature sound if a Pultec in the low frequencies. The upper range is a bit better but still. Why bother with this?! You made great stuffs is this just an appeal to the "Heritage Heads"? If so, I'm saddened. I loved the sorta "fabfilter" model they kinda had- "fuck the GUI interface of hardware lets just make something killer" ideals.
All that said? Ozone is a totally killer plug in. I use it often...just not the new "vintage" section in most cases. It's strengths are elsewhere.