VERY nice question!!!
First off, I don't prefer the no-layout. There are spreads out there that can offer more answers with less hassle in my opinion, however, it is a quick method to gain answers to specific questions... it loses its charm when you have to do several no layouts to get to the meat though... if it's details you want, No Layout is not the way to go, but it is usually where the novice will start since it's simpler to start out with.
I'm also not a fan of using the Tarot system of assigning particular meaning to the card's place in a spread for Lenormand readings. For example, using the Lenormand cards in a celtic cross takes away the Lenormand card's autonomy (in my opinion)... but I've never tried applying two-three Lenormand cards per position in spread so, it's worth a try. However, based on experience and previous exercises we've done in this forum, specific layouts with specific meanings aren't the best way to use Lenormand. Just my opinion again, based on what I've tried.
THAT SAID... Lenormand, combined with the Tarot is a powerful tool. The Tarot adds a layer of meaning to the whole reading and focuses the answers so much better than, say, simply doing a quick Lenormand spread. Some of the best readings I've seen done on here involved a blending of Tarot and Lenormand. No joke, try it out with a 3 or 5 card spread... and I am particularly fond of blending them in that fashion for short spreads.
If I were to use a Celtic Cross type spread and apply it to Lenormand, I would use at minimum two Lenormand cards with the one Tarot, or just the two per position without the Tarot because usually with Lenormand, you're trying to bounce the meaning of the Lenrmand card with another card.
Food for thought anyway!!
LE