It’s ironic that they have prioritise streaming to make it easier and more convinient for casual players flight sim. Yet they expect users to floght plan using simbrief. 
I can tell you now that no casual player will use simbrief. They don’t want to spend 10-15min before each flight to flick back and forth between simbrief website, simbrief tablet, mdcu and also configuring third party ATC
In 2020 I fly in the Asobo A320 which had been discontinued for 2024. I love it. Yesterday I flew a new route. From LAX to Sanfransisco. In less than 1min I choose departure, arrival, approach. ATC worked well and the only issue was that I flight level could have been been 5,000 feet lower by the final two way point. However during my second flight of this route I compensated for that.
Overall that was an easy 1hour flight without using third party flight planning or atc.
Given that the TCA Airbus Edition is the hero pheriperal for the game I would expect this level of convinience to be offered by the 2024 EFB for all Airbus aircraft.