With the new rules and all, I thought I'd give it a try to form a Gondor army. I must admit I haven't actually seen the new rulebook, so this list is solely based on hearsay.

1st Warband:
Faramir, Captain of Ithilien
6x Warrior of Minas Tirith (shield)
6x Warrior of Minas Tirith (shield, spear)
252 pnts

2nd Warband:
Beregond of Gondor
6x Warrior of Minas Tirith
6x Warrior of Minas Tirith
127 pnts

3rd Warband:
Damrod, Ranger of Ithilien
7x Ranger of Gondor
5x Ranger of Gonder (spear)
121 pnts

Total points: 500
Total models: 39
Total Might: 5

While my two secondary heroes aren't all that powerfull, I figured that Faramir packed enough strength to make up for that. Also, since both Beregond and Damrod are rather cheap, this means I can max out on models and bows. I reckon that a force with 39 models with the new rules, is about as big as it gets at 500 points.
Still, could be I'm missing something and also, I'm slightly worried about Wraiths.

A lot of my lists have either come to 26 or 39 models, which will probably be the norm (however my friend has got 60+ hobbits in 500pts)

Seems solid enough though!

_________________
++ THE VANUS TEMPLE ++
Contact for commissions!

Yep, solid looking army.

Not entirely sure about this new warband rule. I liked the old rule because you could mix and match warriors and heros. This feels like being a little too prescriptive. I have not seen the new rules yet, so I'll reserve final judgement.

_________________
Farewell, and may the blessing of Elves and Men and all Free Folk go with you.
May the stars shine upon your faces!

Perhaps some of the more elite Gondor warriors to help with wraiths? Swan knights on foot would do well, they cost 1pt more than a sword shield Warrior of Minas Tirith for the higher courage. Though I play evil and usually use a wraith so I'm not to worried about how to deal with it more how to use it. (Also I only have the Fallen Realms and Mordor books and just went off the BRB for ideas, so I may not be the best source of knowledge)

Maybe remove some rangers with spears to get shields at the Minas tirith warriors and also maybe Guards of the fountain court?