Yet another Attempt choosing other armies to see what you guys think about this.

Warband 1
Corsair Captain with crossbow
8 Corsair Arbalester
135

Warband 2
Corsair Bo´sun with shield
6 Corsair Reavers
2 Corsair of Umbar with spear
126

Warband 3
Corsair Captain with shield
2 black numenorians (Castellan of Umbar)
6 Corsairs with shield
141

warband 4
Corsair Bo´sun with shield
6 corsairs with shields
98

total: 500pts
Might: 4
models: 34
break on 17

Not a huge list type of army but does include several crossbows in this army.
Warband 1 is merely for shooting, benefiting of some might along with a volley of crossbows
Warband 2 is the killing type of warband,several reavers with bo´sun as a banner can prove deadly
warband 3 is a bit more to hold the line, using the shielding rule to the max trying to hold as much as I can
warband 4 just hold numbers with shields, also giving me another banner source

And now a bit more cheest list

Warband 1
The Betrayer
9 watchers of karna with bow
210

Warband 2
Suladan the Serpent Lord
8 serpent guard
154

Warband 3
Haradrim Taskmaster
11 Haradrim with spear
137

total: 501pts

Might: 7
Models 31
break on 16

This is a more deadly army, very deadly with poison and somesort in melee
The betrayer ensures that his warband shooting is all but spitting death around him hitting targets on 3+ and re-roll 1s and 2s to wound on shooting and in case of needing the impressive number of attacks per watcher ensure that I can still be effective in melee.
A more close combat oriented is Sulandan´s group, if the betrayer linger around they become even more dangerous with their poison rule and combined with a taskmaster, Suladan got a fair good chance calling out heroic moves without spending might points in order to do so. The taskmaster on his side is followed by a bunch of haradrim just to fill out lines...

What you think?