Letting macros activate macros leads to botting, not conditionals. Not ones that only executes on button press at least. WoW had that type of conditional macros and as far as I know, it wasn't bot-able alone. Conditionals can save macro space AND hotbar space. Examples similar to what wow was capable of

/micon (currentac)
/if (full thrust = comboac)
/ac full thrust
/elseif (vorpal thrust = comboac)
/ac vorpal thrust
/else
/ac true thrust

This macro would combine the full thrust combo line into one button and switches the icon display according to what skill will activate when pressed. Instead of pressing 3 different buttons, you'll only have to press the same buttons 3 times. Another one:

/micon (currentac)
/if (stance = shield oath)
/ac sword oath
/else
/ac shield oath

This macro would combine the paladin oaths. If you have no oaths on or sword oath on, you switch to shield oath, if you are on shield oath, you will switch to sword oath and the icon will display accordingly.

Now, I like macros but I understand that people would be against this type of macro anyway, because they believe that it'll be too easy and they're already pro and stuff or just general fear of botting (which already happens without these anyway). I've been playing fine with the current macro system but some people do have physical conditions that impairs their dexterity alot (I was arguing with someone with this condition in this very forum over a macro system he is requesting) and this will help them a lot I think. If conditional macros never happens in arr, I can deal with it but please understand that there are people playing with less fingers/thumbs, the shakes, tremors, whatever impairment that affects their hand dexterity.