This would be a really small change but it should be mandatory !
Too many times we forgot to tick Active Time Segment or Range or Frames when rendering an animation in the Render Setup -> Common Tab -> Time Output.
We leave it to Single which is the default.
The logic would be that when we create a batch render and there is more than one frame, the batch render should override the way 3ds max will save the images.
I can't see a reason why we would leave it that way since the files are just saved on top of each other resulting in a one frame sequence.