TBH, if the GTD can get anywhere near the published MPG figures that VW have issued, then I'll be delighted - performance pack or not, I'll be happy with 184ps.
Thing that's worrying me a little (just a little mind), is the reported issues a number of people are having with the economy of the 2.0 150PS engine in the SE and GT spec's, which according to some forums, despite all the weight saving and bluemotion technologies these cars have, seems give worse figures than the outgoing MK6 models with none of the tech.
Secondly, it seems the non PP Gti's brakes are coming in for universal praise as being quite powerful (which will be a VW first on an non R model

), so the only thing I think I might of got some use from would have been the LSD. With the GTD probably being slightly more nose heavy than the GTI, it might actually have had a more positive effect on this model than the GTI, and perhaps would have prevented the small additional understeer that no doubt the GTD models will have compared to the GTI ?
In any case, so long as the car does as advertised, I'm glad there's no performance pack, as knowing me I'll have added it anyway, and I'm still incurring the wrath of the wife for littering the car with so many options in the first place
