actually sindh is pretty easy, you just have to think outside the box. Apart from that nearby city all the other rebel settlements are well garrisoned especially the two full stacks to the west. If you run past those settlements there are plenty of easy to take areas beyond including that omani fort. There are ALOT of reb settlements in this area hoover them all up and then take those annoying full stack regions. Also the full stacks may be bugged... when playing as makuria I can take Axum easily if I lay siege with a small force and the ai sallys. Once I take it the full stack nearby does not attack, this may also work for those two full stack settlements west of sindh
San the armenians are an interesting faction, I like them as they feel so pressed in by nieghbouring powers. The key is antioch, taking it quickly and developing it's roads and port give great wealth over time. Quickly get an alliance with koj before sacking antioch (important as in one campaign koj declared war on me the

ers) in case they refuse after this act... do not take the rebel forts near your heartlands they will keep the ai busy awhile. after taking antioch (I would recommend attacking form the southern city wall as there is a nice slope to place your infantry on right by you!) run past that heavily defended fort to the north and cross the river... beyond edessa are some easy to take regions that will enable you to push into what would be georgian territory... don't get too greedy ensure there are buffer reb settlements between you and other factions. After you get stronger take edessa and the other well garrisoned town near it. Now it's time to drive the ayyubids out of the levant. build a ballista workshop and exploit the ai attacking poorly defended regions... I would recommend a horse archer army, easy to get as there are plenty of mercs lying around. Their main stack will hopefully break itself against that fort with the full stack and be weakened.