Yea you are really nitpicking..
Don't listen to this fakkit golden gloves about the training mode... Golden Gloves if you're not a fakkit, my apologies but you sound like one bytching about having to press 2 buttons to go to the next move...
And yes you can put the command list on the screen while you're practicing in real time, and Yes you can scroll back in forth up and down the command list in real time without having to go back into the full list.. all you do is is hit select+R1 or select+L1.. or hit Triangle to watch the CPU perform the move...
I personally prefer to manually go to the next move instead of it automatically going to the next move after I input the notations, so I can keep doing the move over and over until I memorize it
And yes you can reset your position to the middle or ANYWHERE on the stage...
You can also take control of the CPU, record yourself doing a string of moves, switch back to your character.. have the CPU do that string of attacks you recorded while you practice defending against it...
Tekken Tag training mode absolutely shyts on VF training mode. Its nowhere near as incomplete as T6 training mode was..
Here's an more accurate walkthrough of the training mode
Tekken Tag Tournament 2 Practice Mode Reveal - YouTube