Rules, bases and ordering

So I have been slightly baffled by trying to work out how I can base my models so I can play Black Powder, Lasalle and Napoleon at War rule systems. I looked at the rules themselves and then looked at some message boards.

Napoleon at War

Looks fun, has standard basing and unit numbers.

Lasalle

Has instead a more flexible system regarding ratio but instead has standard numbers of bases for each unit.

"There are three basic types of units: Infantry, Cavalry, and Artillery. Infantry and cavalry units may be depicted in one of two sizes: Small or Large. Large units have six bases each, and Small units have four. Artillery units have a varying number of bases, between three and five, as described in their army lists."

So theoretically you can have as many or as few per base as you wish.

Black Powder

I have the rules but I have not read through the tome properly so I am relying on the wisdom of others:

"Base sizes don't matter at all - just play with what you already have. The whole premise of BP was to be able to play with our respective collections whether they were based for different systems or not.

On the size of units thats flexible too - you pick the size of a 'standard' unit and then tiny, small and large units are decided based on a ratio of the standard Sounds a bit mathematical but it really isn't! So, again it's very flexible and aims to allow players to just play games with their armies rather than having to rebase or to have to standardise their armies compared to their mates." (Paul @ Warlord Games) 

Campaign Game Miniatures

Just to complicate matters just that little bit more Dermot Quigley at Campaign Game Miniatures is also working on a new rules set. I can't wait to learn more and I asked him about the rules as I would like my new armies to be compatible. Link to Campaign Game Miniatures.

Thoughts

So from my perspective I am thinking of rebasing my models to NaW bases. I am also thinking of bringing my regiments upto Lasalle size battalions. Having said that NaW has the skirmishers separately, you can do the same with Lasalle. But the different ratios means that having each of these look 'right' regarding the number of voltigeur and grenadier companies might be a bit hard. Hmmm, tough life!

Does anyone have any thoughts on basing for different rule systems? I have been reading blogs and message boards but any thoughts are welcome!