My opinion about this balance is more negative than positive.
Citrons were characters which was good when they was played by good players and useless characters when played by bad/new.
I know it because 90% of the citron i have ever met in my life, i could kill them with every zombies easily.
Citron was also one of my favourite characters, he was pleasant to play, good etc...
i found them good except the toxic one which is a pain to play.
For me; citron is a character that you can play at body to body AND at long range.
Removing citron's long range capacities will remove probably 40-50% of the kill you will have and maybe more so it will impact the pleasure you get by playing him.
And this is for the normal one which is probably the citron who gets the better in this balance.
The toxic citron was already bad, it was bad in 1vs1, he was just good to get stolen kills; in fact in was the professional for assist. The electric one was very good provided that you know how to AIM correctly. It is clearly not a body to body character, he has single shots, hold shot, i am sorry but this things cant be a body to body character same if he can kill many zombies at body to body, he's just not for the body to body and it is the feeling i have. Now he is just useless, probably twice worst than the normal one, he's totally unbalanced now, the one that play him is masochistic i think. Actually, citrons were characters where you could do chainkills if you was a good player but now if you do 5 killstreaks, it is probably a lucky day for you.
Now he had the chomper's disease : you play him for fun but you will not have a wonderful score and you will quickly change your character ...
That make me sad, it wasn't my main but just yesterday by the way i did a game where i had 86 kills for 13 000 points on the moon on a game where the second which was good had 40, unfortunaly it was the last time i could have fun with him and a good score... Rest In Peace my friend