With the announcement today that all Leagues will switch to the new 0.4.6 Sim Engine at the end of the current season, I think it's appropriate to share what is known about changes to gameplay.
The Leagues I admin - Legends, Victory and the roster only Franchise Football have all been using the new 4.6 for a few seasons. Please take a look through these threads to see how things are likely to be.
General Hints and Tips
https://lol.myfootballnow.com/forums/1/565?page=1Play Stats
https://lol.myfootballnow.com/forums/1/662?page=1Punt Blocks are very rare, whoever you line up to try and block. This is due to changes in the code for blocking - that therefore effects every play in the game.
