Even if they don't want them back, they will NEVER say it explicitly.
So don't even bother asking.

Nokia gave those devices because people who can't afford it can still play with it.
You got it, use it wisely, develop on it and still be an active member of the community,

I too would have liked a stronger discount, but that's the way Nokia has always worked (I believe). They won't (and they are not) changing it now.

No need to complain, it won't change.
Let's push this complaint for the NEXT developer program and see if something better can be achieved.

Former devices got the same amount of discount (300€ circa), so nothing is really different here.
Same amount of devices, same amount of discount, just in different guise.

I personally may not use it as I got the loan for a year.
I can understand having it for only 6months and having to spend 300€ may be too much.
But just use it for a month or two and then decide if it's worth a Christmas Gift.

Aniello