And just like Neuro, this was one of my most frequently used mode
Zone AF was your most frequently used mode? What types of photography are you doing? For my wildlife stuff, I use spot AF / AI servo with my 7D almost exclusively. I have trouble enough getting the focus I want with that and can't see how zone AF would work.
No no, not Zone AF . Zone AF doesn't let you choose the initial AF point. The mode that Neuro and I were talking about is Automatic AF Point Selection (yes, the one for people who don't really care about what should be in focus). And when you are in Automatic AF Point Selection AND AI Servo, you can select the initial AF point for tracking (I know, it is not really intuitive, and may be that's why the feature's been there for 5 years and still is ignored by some). The advantage of this mode is that all the AF points are used for tracking, so when the subject quits the initial AF point, the other points will take care of it.
YMMV, but I'd avoid using Spot AF combined with AI Servo. Spot AF uses a narrower area for acquiring focus, so it is slower to acquire focus, and it is more difficult to keep the subject within that (narrower) area.
Here are some photos I took with my 7D and my 100mm L Macro, I wish I had the 1D X/5D III and the 70-200mm f/2.8 II L IS for these situations, but that was all I could afford