Is it possible to implement the Ethereum idea in Nxt?
Is there will to do so?
Is there will to do so?
Yes - although in Nxt it would be handled as a feature that is "above" the basic low-level transactions (which are kept much simpler to keep storage to a minimum and to have "normal" transactions work as fast as is possible).
CfB has already proposed a similar low-level language and James also posted quite a bit on this a few days back.
Whilst it is very interesting from a software engineering angle to have such a powerful scripting concept it still remains to be seen how useful it turns out to be "in practice" (one reason I think it might actually be better to let Ethereum do the R&D for us).