Kipp
King of the Kobolds
For soloists ranged damage is already much too low and kill times are significantly below melee and DPS casters. Add this to the way that ranged kiting works and it is an impractical method to level a solo character at anything more than a turtle's speed.
I would suggest upping base damage on all the xbows, bows and lowering attack rate on repeaters and dual xbows. I wouldn't do it via doubleshot because that adds another calculation into the chain and is invisible to the player in real time.
Then talents in a few trees can multiply damage x2 or even x3 with the proviso that those talents are only effective when the player is standing still and has been for at least 3 seconds (similar to how Archer's Focus works now but not on an incrementing basis, just a one-time bump.)
I would 100% get rid of Archer's Focus and any other talent that increments more than once for the condition of standing still. Replace them with a one time percentage bump that occurs after the player has been standing still for 3 seconds and fired a shot and still has a ranged weapon equipped in the primary hand.
I would zero out any ranged power adds that occur once a ranged weapon is no longer in the primary hand.
At some point we're going to have to deal with the fact that DDO is like an assembly line of power adds that reward nonsensical game play with tremendous power.
I think the main problem with solo ranged is a lack of aoe honestly, the actual damage is fine for the most part. The problem is that when ranged was conceived, the idea was that it would be more for sniping down strong targets from afar, while melee cleared trash and spellcasters healed/cc/buff/did some damage (spellpoints were a much bigger limit back then). Overtime this game has turned into Diablo and now we fight groups of 10-15 such that the ranged way of doing things still works reasonably well, but only if you have someone aoe in the party too. They added aoe ranged attacks but aside from artificer, these mostly suck. For example, the paladin ranged cleaves are fine in theory, but the problem is they only shoot 1 missile, regardless of weapon type employed and so while the skills look very similar to artificer, because you're doing 1 shot vs 4 shots, even with inquisitive it ends up being little better than just auto attacking. The aoe spread on these abilities also more or less require the enemies to be on top of each other, which is rare, and half the time the abilities just dont do anything.