Sir, all the three areas you have mentioned are more or less improved in New Civic.
Acceleration is very good, I drive manual and I absolutely love the acceleration despite driving in ECON mode which tends to lower the throttle response a bit. May be Auto will feel a bit sluggish but with manual transmission you can drive in whatever gear you want irrespective of the ECON mode (on/off).
Regarding suspension if you check the spec sheet you will clearly notice that suspension has been overhauled. It's not the same suspension of 8th Gen. it's no more a bumpy ride even with the Eurostar stock tires. If you think Corolla is comfortable then I assure you ride quality is very much the same as of Corolla in city as I have observed.
Cabin is pretty much quiet and if you are a calm driver you will notice the quietness even better.