I think you should delete the sentence "Companions require a sideboard". It's simply wrong information. Companions are explicitely not needing a sideboard according to WoC. It's Ok that you explicitely ban companions, even though I think it's just stupid to put something directely on the banlist and not on the watchlist. It forces player to move as they had to like when Planeswalkers were introduced.
I especially sticked to this format, because it was barely restricting anything and I strongly believe it being unhealthy blocking new mechanics in advance, even when they seem bad for a format. In my opinion companion (exception Lutri) are not a problem due to theire restrictions. And in addition they are a one time apperearance per game and are quite different from a commander.
I think it's only fear and lazyness driven to ban companions completely.
I especially sticked to this format, because it was barely restricting anything and I strongly believe it being unhealthy blocking new mechanics in advance, even when they seem bad for a format. In my opinion companion (exception Lutri) are not a problem due to theire restrictions. And in addition they are a one time apperearance per game and are quite different from a commander.
I think it's only fear and lazyness driven to ban companions completely.