Well, let's look at the impediments to warlord strikers, along with some other things to keep in mind:
1) No big damage 'at will' powers; two of them focus on letting allies shine. The other two are probably your best choices; Wolf Pack Tactics lets you surround enemies and reliably get flanking, while Viper's Strike makes it more difficult for enemies to get away. Both of these are pretty useful for dealing damage - they don't boost your damage directly, but they make it easier for you to reliably hurt your foes.
2) No 'bonus damage' power (such as Sneak Attack, Hunter's Quarry, or Warlock's Curse.) Thus, you almost certainly want to pick up the multiclassing feat for rogues or rangers to gain some limited ability to get bonus damage. While rogue isn't a terrible choice, since Wolf Pack Tactics will help you set up flanking, ranger is probably a more reliable choice, and doesn't limit you to smaller weapons - and opens up some decent choices for power swap.
3) No 'bonus accuracy' power (such as Fighter Weapon Talent, Rogue Weapon Talent, or Prime Shot.) This is what makes your choice of weapon hard - you can go with a Maul or Great Flail for maximum damage potential, or go with a Bastard Sword for more accuracy (and the ability to use a shield or dual-wield.) If you are multiclassing rogue, grabbing a rapier and Nimble Blade will help your accuracy quite a bit.
4) Damage-wise, your encounter and daily powers are pretty good. Lead the Attack, a level one daily, is absolutely fantastic if you have a good Intelligence.
5) Speaking of which, should you specialize in Intelligence or Charisma? In general, I'd say Intelligence for this build, since Tactical Warlords tend to be more offense-driven, while Inspiring Warlords are more defense-driven. However, this might change depending on what race you want - if you have a race that is up Charisma but not Intelligence, your choice is probably already made.
6) As races go, Dragonborn are the most obvious choice. The abbility bonuses are great, the breath weapon is useful, the bonus to hit while bloodied is very handy. Half-elves are a potentially decent choice, since dilettante can be very handy for this build, letting you grab Righteous Brand, Reaping Strike, Twin Strike, or some other useful power. If you are looking in the Monster Manual, Bugbear and Minotaur let you use large weapons, and a large maul hits for a lot of damage. Dwarves, with the feat to boost hammer damage, can also do decently with a maul.
7) Finally, keep your eye posted for the Forgotten Realms Campaign Book, which looks to have some very good choices. You can see a preview on the rpga site (
here) which includes some info on Genasi and Swordmages. Genasi are an absolutely fantastic race for Tactical Warlords, and swordmage makes a great multiclassing choice for them as well.
In the end, you aren't going to be able to build a warlord who does as much damage as a striker - but you can get reasonably close, which seems fine considering you will also be able to heal, buff and control the field.