Madness/Balance:
Using Disturbance/Lightning Strike is actually not a dps loss, it is just energy consuming so most just spam pebbles/lightning to conserve energy wile minimally decreasing dps. And as for accidentally clipping it I don't know what you are doing wrong!? B/c its not that hard to stand there for the duration besides, if u do a rotation you have more than enough time to build the 4 stacks as you may have to spam the pebbles/lighting ability more than 1 time, unless you are using disturbance/lighting strike. I don't advise this if you do not have an old 4 piece 186 set bonus that gives alacrity periodically throughout the rotation.
Yes, TK is much better than balance, on certain fights and is easier to nail down the rotation. But there are many fights where Balance/Madness is much more desirable and will give you better numbers. Learn both specs, master them both, and know what works and what doesn't.
All in all, balance/madness is not broken, its just challenging to nail down the proper rotation to do maximum dps.