I think its great!
As an aside according to Psalti Boy I should ask if you're Orthodox. Are you Orthodox brother Serb?

Sorry its really late and things have been pretty busy for me. Are you genuinly asking me? Or are you sarcasticly poking fun? Sorry for being slow

* ( I'm assuming sarcasm...

)
Here is the way that I see it working out:
At the end of Liturgy, after "Through the Prayers of our Holy Fathers..." the parents with their children walk up to the front of the church, and the priest spends like 5 minutes with all of the children and just plays with them.
Maybe he lets them hold his blessing cross, or maybe he can bring out a relic, or something which the little ones can touch or "play" with. This might be a good opportunity to distribute communion of someone missed (hint: parents).
If the kids have something like this to look forward to every sunday, I think that would be really special. The priest can show them his vestments, or ANYTHING. Icons...etc.
I also like the idea of it being open, in the sense that the entire church can see that this is going on, and that the children are "active" in the church. It also is a sort of private ministry as well, because the children are the ones who are being ministered to.
There are a lot of "what if's" that follow this, which I would love to hear...but this is my basic idea. Any feedback?