RHJ may get more minutes, but for fantasy purposes Boucher is probably still the add unless they run RHJ same minutes as Siakam. Having own RHJ during his prime Nets days even in 35min RHJ at best a top 80 player. In 25-30min I'd say his outside top 100. Boucher on the other hand is going to be rosterable in 20min and if he can reach 24-26min he'll easily be inside top 80.
There are 96 minutes for the front court. Ibaka, Boucher, RHJ can all play in the high 20s low 30s with OG playing some small ball 4.
Another thing to consider is what the team standing will be when everyone is back. They can easily tumble in the standings over the next month or two and end up being sellers at the deadline, as well as starting to rest their veterans. There is slim ROS upside for Chris Boucher.