I came out of business jets, and the B717 performs right along with your "average" bizjet, whatever that means.
Most takeoffs use de-rated power, usually a 12% derate, sometimes 18%. Occasionally, full power (18,500# * 2) is required, but usually a 12% derate is adequate. Accceleration is brisk- for a full-power take-off, make sure to secure loose items in the cockpit, like your Jepps binder and the bag with your lunch in it . . . . . Otherwise, they will definitely be going places. . . . usually to that place under your seat that you can't reach without getting up . . . .
Average initial ROC varies from 2500 fpm to 4000 fpm at 250 KIAS. Climb profile is set by the FMS, but changes to approx 303 KIAS. It will adjust it for winds, if you enter them in the FMS- it will take the higher groundspeed with headwind, and climb harder with a tailwind. PAssing through mach crossover (around FL260) you may only see 700 fpm, but that is typical for all the jets I have flown, improving again as you reach the cooler air. Of course, the best rate of climb you will see will be attained approx. 1000' to level off . . . . . but that goes without saying.
Yes, I too would like to see a higher service ceiling for the airplane, but I am very happy with its performance. It is certainly no pig, that's for sure . . . plenty of power, combined with the MD11 avionics suite makes it an enjoyable airplane to fly . . . .plus the A/C (air conditioning) works very well, which is very important when you are ATL based!
All in all, I have very few complaints about this aircraft- it does what it is designed to do. Nothing is perfect, but this one ain't too shabby.