Hi Torsten,
this is a distinct possibility, there is one on the d-live and these effects are gradually being added to the SQ range as purchased upgrades with each firmware update release. although it has been hinted that in the firmware update that is expected soon will include dynamic eq, multiband compression and de-esser so will probably not be an option for some time yet.
however of you cannot wait, for the price of a SPL Transient Designer 4 hardware unit you could probably pick up a second hand waves server and add whatever plugins you wish/feel are currently missing!
cheers
Dave