My point was that the actual payload is mainteance-heavy. On the other hand it is certainly true that RCS of such satellite would require exceedingly large sto

My point was that the actual payload is mainteance-heavy. On the other hand it is certainly true that RCS of such satellite would require exceedingly large stores of RCS supplies which will invariably run out and have to be somehow replenished. Edit: even hall thrusters require stores of xenon and with the precision required the amount consumed is far from practical.