actually most window people complain about not having a forward-delete button on the keyboard, and it took me a day to get used to pressing both "fn" and "backward-delete" together. a whole day! think about the productivity loss...
seriously, it's not a big deal. you don't complain about having to press two keys to save a document, do you? should apple implement a "save document" button because it takes two keys now?
[begin rant]
windows keyboards are something i don't ever want to use again. in the 80's there was a need to have function keys, so they were there, problem solved. today, the stupider the people get, the more buttons they seem to add to a keyboard. for example, these compaqs we have at work, they have another row of function keys and a little software to map functions into them. why on earth can't that software map functions to function keys which are now left unused? stupidity. when you want to have a function pressing function keys you have to press two keys and the single function key press does nothing. do you complain about that? no, but you insist on having another set of function keys that you can map with an extra software.
and then the people in the office are so depressed when their "open email" button doesn't do what it's supposed to do - and they have to call it support for instructions how to open email. stupidity.
[end of rant]
maybe you should just think about that delete button thing again. it's really as intuitive as it gets to have one "backwards delete" button (backspace) which will turn into a "forwards delete" by pressing the function button. i mean... before you press that button, you know what way you wish to delete, and pressing that another button is easier than trying to find where is that dedicated "forwards delete" button located in the keyboard.