Most of the time T/Os are performed wit F1, but if your calcs were for F2 or even F3 there was NO warning if you put the flap lever to F1 for T/O.....
Another thing is Tflex. Neither on A320 nor on A340 flex temp was asked for in a checklist on my operator. Well, on A300 it was....
Airbus is generally quick to find fixes and both these issues have fixed. Flex temperature is very much a part of the C/L for a long time now. As far as config warning is concerned in conventional A320 it was just an assurance that you are not outside takeoff configuration. Now Airline can opt for new app that will compare the actual configuration with the MCDU entry. Acceleration check in my opinion is not possible when thrust settings vary by as much as 40% nor is it required when everything else is in place. Trend arrow is a good indicator it can even indicate a wind shear.