well...do you want to keep the buttons? what do you want to do with your controls? you have to be a little more specific than I just want new controls.
Also what bike? I am going to assume cb750 from your last...(shudder)...knee dents post, but what year? Certain years require a dual pull throttle where the two cables pull opposite each other (instead of two the same direction).
on my 550 and cb750f dunstall I deleted the stock right side bar swtich and run a magura throttle. for the 550 I run light springs in the carb rack, but the 750 has dual cable throttle I found at mid-ohio this year in the swap meet. The right side switch has the kill and the electric starter in it, both of which you have alternatives to if you want to delete. depending on your year it may also have the headlight switch too.
On my race bike 350 I have a stand alone throttle assembly, brake lever perch, and kill button. You could add another momentary contact switch for a starter. On the left side I have a stand alone clutch lever assembly. I believe there are small horn headlight switches available. I use the shorty dogleg style lever assemblies from Dennis Kirk,www.denniskirk.com. Look in the dirtbike section. All of that stuff is cheap individually, but does add up as you would need a throttle, 3 switches, and 2 lever assemblies. I am running the same setup on my XL500 project. If you look in the project build section on the dirt bike thread there are pics of th 500 that give an idea of what I have.
ok, so what type of bike are you building? semi-stock? full blown custom? I am guessing by the knee dents that you are going custom...well here is the chance to suss out the details that make your bike more than just another "lemming racer".
you could retain the stock controls (or get replacement stockers off ebay). Polished up the stock controls look very nice, in stock form they scream "you took a shortcut". repainted and relettered they can also look nice but right now they are probably a dull eggplant color - right?
on the full custom front:
If you get a keyswitch that turns like a car to start the bike, you can eliminate the starter button. You can also hide an aux starter button somewhere else on the bike (my cb550 chop has it on the battery box). you can bypass the headlight on/off switch by connecting the wires that normally go to the control directly to the headlight. A deadman switch will look "race" and actually make you class legal if you ever want to do a track day or drag racing brackets with your bike.
On the left side you will need headlight hi/low, horn, and signals (if you are keeping them). plenty of places sell custom ones although I like the round ring ones British Cycle supply sells.
you will need levers and perches if you go this route. You will also need a throttle. The advantage is that you will have a one of a kind bike that looks like you put a lot more work in than you actually did and not just another cobbled together cafe lemming newbie bike where you just ripped off what others have said makes a bike look "cafe"