The question to be asked is what's the kind of ground support Baijayant Panda brings with him . He was the BJD's chief parliamentary whip & key pointsman in Delhi. There's no doubt he's an asset if he's included in the BJP but from the little I've seen and read he's no mass leader .
I had read that BJP's original plan was to straight up split BJD with the help of Panda, but closer to election time than this. So yea, it remains to be seen which other leaders BJP is able to rope in; but even though Panda by himself isn't a conventional mass leader, he brings an absolutely massive asset with him - Odisha TV (as well as any inside info he may have about Patnaik and BJD since he was a high up in the party and a close family friend of Patnaik).