I hope this is also the right category for this kind of requests and I know this is far to early as there are already many dice to be manufactured and I have not got my dice yet like many others, but just want to see if others are interested, too. (I already mentioned this during the Kickstarter)
So a Blood Bowl Block dice is just a D6 with special sides.
Typically Push Backs are on opposite sides like Attacker Down and Both Down, and Defender Stumbles and Defender Down.
Typically you need a set of three Block dice, accompanied by 2D6 and D8 (which we already have) and optionally D16 (which would also be a new dice).
Having your rolling tracked would be great for competitive play and sound and light effects for friendly and league play.
And this game has a very active community, just as an example see the NAF as world wide organisation:
https://www.thenaf.net/
And there would be also a site where you can play online allowing for some integration:
https://fumbbl.com/