No one has topped Conroy yet, and I doubt anyone will. Sure, he's not as good as he used to be, but he's still the best Batman VA of all time.
Roger's Batvoice is good on its own, but it sounds absolutely nothing like young Conroy, and that's why I don't like it. He's not playing his own Batman, he's playing a younger Conroy Batman. They should've hired Anthony Ruivivar, he sounds a lot more like young Kevin in Beware the Batman than Roger Craig Smith does.
Also, the reason some of Conroy's lines sound a little dull in AA/AC is because those are eight-hour long sessions in a booth. It's nothing like how they record animated movies or TV shows. In the cutscenes, he sounds amazing, but during gameplay, there are some narrated lines which sound a bit phoned in, but that's the voice director's fault, not Kevin's.