Some info on the 222/230/430 designs
Having been a factory pilot with Bell since the first 222 hit the flight line, I can pass on a little info about the collective and throttles arrangement.
In pre-design in the early 70's the target market was going to be the bizjet community and the set up had the eye appeal that the marketing VP wanted.
Along the same thinking, several of the early prototypes had only a single right side cockpit door, an idea later scrapped when emergency exiting became painfully obvious, but that's another story.
Early prototypes also, in the same vain as several bizjets and turboprops, had T-tails. Unfortunately, because it was very eye appealling, the test flights showed poor stability so the horizontal elevators were chosen instead.
Lastly, the collective design with the throttles at the top of the stick and and the various switches positioned aft toward the middle of the tube allowed us to get by with a built in friction of about 5-6 pounds as opposed to the 10-12 that the 212 and 412 required. Hence it's a lighter feeling touch that pilots prefer and without an excessive amount of weight out on the long arm, the creeping collective and/or bounce could be kept to a minimum.
By the way, the stick shaker in the 430 only works on the pilot's side.