>>280387453
They were really good about it in part 1 where they'd go extra miles and even add new animation to some of the OPs as the arcs progressed and new things were revealed. This is a rare thing I haven't seen done in really any other series I can think of off the top of my head other than Jojos.
I think they only did those extra versions with the 4th and 5th OP though maybe there's more