So after you attract the orc, and he charges you... what does this character do?
Ranged Martial Defender:
Class Feature: Point Blank Shot. You gain a bonus to AC equal to your Con score against Opportunity attacks for using your ranged weapon in melee.
(Design Note: This is on par with archer rangers getting Defensive Mobility free, or Artful Dodgers gaining +Cha bonus versus OAs)
Shoving Shot
At Will Martial Weapon
Standard Ranged Weapon Melee1
Atk: Dex vs Ref.
Hit: Push the target 1 square, then make a basic ranged attack against the target.
(Design Notes: Mechanically, I took Opening Shove (Martial Power, 103) and replaced the Str vs. Ref with Dex vs. Ref. Openign Shove states 'choose an ally, that ally can shift one or make a basic attack vs. the target'. In this instance, the defender makes the attack. It is on par with 'Nimble Strike' (Which lets a ranger move out of melee and make an attack) and Tide of Iron; it allows the character to move the enemy out of OA range, and then shoot them.)
Hit Me Right Here
Encounter * Martial Weapon
Standard Ranged Weapon
Attack: Dex Vs. AC
Hit: 2[W]+Dex damage.
Effect: If the target hits you with an Opportunity Attack, you do extra damage equal to 2 + Con Mod.
(Design Notes: This power gives the ranged defender an incentive to use this power in melee. I took inspiration from the various Bravura Warlord 'enemy makes basic attack against you, if it takes it, your friends get bonuses' and instead made it 'if the enemy hits you, you do more damage', which seems to be a more defender-y thing. This is on par with the various Fighter powers that grant extra damage equal to con if using a certain weapon. The reason I said 2+Con is to facilitate the way some powers are bumped if you pick a certain build.
Since this class doesn't have multiple builds, I'm factoring the 2+Con in to demonstrate. If this was a true CLASS, then it would likely look like (You do 2 extra damage. If you are of X build, then you instead do 2+Con damage.)
Yes, I'm aware that if multiple opponents flank the defender, then he's only getting the benefit of one OA and the ohters are getting it in free. That's the threat here. I can imagine a Daily stance power which allows the defender to add Con mod to damage for
each OA for melee ranged that comes his way as long as the stance is maintained, but that is premaure.)
Bleeding Barrage
Daily * Martial Weapon
Standard Close Blast 3
Requirement: You must be wielding a ranged weapon.
Target: Each enemy in blast you can see.
Attack: Dex vs. AC
Hit: 2[W]+dex damage.
Miss: Half damage.
(Design Notess: Completely ripped off the rogue's 'Blinding Barrage'. The rogue's damage output is limited due to his weapon selection, but the rogue gets to blind the target (a very powerful status effect). I off-set this by removing the blinding status. This power however lacks any real zazz.)