You're exadurating your nerf desprately.
If all you want to do is be a ranged DD, don't switch to Bard. Archer gains more damage functions as its class than it gains damage abilities as it's job, Bard. If your Linkshell isn't cool with it, find another linkshell. There are 8 party slots and 7 classes/jobs.
Otherwise, Cry more that you can't weave faster than a Melee Job. Every single one of our skills delay our melee attacks, while yours was left untouched, safe at a distance, with support functions to boot. You're not suffering any more of a loss than what every other damage class in the game has to suffer with and you're over-blowing the impact on your damage because you want vindication for your hurt feelings.
Sorry, but I have no sympathy for that sort of whining.
You have damage at range. You do not need clear line of sight in many cases, you do not get impeded by pathing barriers (small, impassible ledges) and you do already have an insured party slot, regardless of your feelings about being a Bard. You will still have good damage against enemies after this patch, as what you lost is also offset by the critical attack changes, and the fact that your main statistic is dexterity.
Honestly, you don't have problems, don't try to make it like this balance tweak made one for you.
When their popularity dips below Dragoon, we can talk. But I warn you, that'll never happen.
"Princess Mentality." Will likely make a return regardless, because they again circumvent MP balancing issues. Making a mountain out of a molehill like this is the least of the worries. These guys are no-risk Corsairs - they shouldn't be able to match DPS with a dedicated DD job in any circumstance outside dropping their job's benefits for more Damage-orientating skills, and then, they can go ahead and compete for party slot like every other DD.
It's impossible for them to be regulated to "Song-Whore" given the game's and the jobs base mechanics.