Good write up DR. D. As you ride the Rocket more you may find your other bikes growing cobwebs. Then growing For Sale signs.
The easy fix for the handle bars is a Rivco Riser kit. They move the bars up and back just enough to help solve that problem. I have them as my stature is small. They are an easy install and no other parts are needed. You only have to reroute some of the cables and hoses. Simple to do.
Now the fix for the fork dive is a little more complicated but easy to do if you know how to turn a wrench. You need to get a set of Progressive front fork springs (or similar) and change out the stock springs. You also need to change the fork oil to 7 weight. The stock fork oil is 5 weight. You will need a special tool Triumph has it for about $40. It is worth buying it to do the job.
My bike is a 2006 standard and has different clutch and brake levers than the Roadster. I too find the Roadster levers unsuited for me too. I don't like them. I do like my levers much better than the Roadster levers. I don't know if they are interchangeable.