Spontaneous curing isn't really that important. Heal is not a cure spell and once combat is over wands or the vigor spells are more practical uses for healing as they'd use up less or no spell slots and Malconvoker only lets you ignore alignment restrictions for conjuration.(its also d4 and poor base attack not a good class for clerics)

Much can also depend on what your DM allows and how the campaign is.

If your DM doesn't allow divine metamagic.(a very sane choice). Turning vs rebuking becomes a little more important. A swarm of low to mid HD shadows or wraiths can be quite the hassle to a mid level party.

Presuming you don't have the level to outright destroy or control them sending them fleeing means they'll just go deeper into the dungeon and possible be encountered in an even larger group then before. Rebuking will make them cower and allow the rest of the party to dispatch them while the cleric hangs back.

On the other hand so much of what one fights in D&D tends to be evil aligned. (even if one or two party members are evil themselves). So Holy Word would in general be more useful then blasphemy, dictim or word of chaos. Unless its an evil campaign but then you need to be evil. Evil Clerics can also use animate dead to provide useful meatshields.

If your DM allows Consumption Field then evil has a real edge.