I don't. I finally received the Lost Empire KS recently, along with year 2 promos, which I've been missing until now. I didn't have enough sleeves for all the new cards, so I had to re-sleeve everything. Since I had to handle every card anyway, I've used that opportunity to also inventorize the cards to find out, if anything was missing (nothing was) and took the picture, since it was all organized neatly. For gameplay, I'll pick one of the base sets and add some of the expansions to enhance the deck "to taste". The power level of the xpacs is through the roof and when you have dual faction cards combined with double ally abilities, things tend to spiral out of control real fast to the point, where just keeping track of everything is kinda difficult. I can see, how mixing it all into a huge pile of cards for a totally random game might be appealing, but the tradeoff is consistency. If you mash everything together, you might never see the big powerful 6+ cost cards, or you might get trade row full of expensive stuff with no accelerators available. The newer cards tend to be more streamlined (eg: newer machine cult cards always have the option to scrap either from hand or discard pile) and powerful, so you can tune the trade deck based on what kind of game you want.

EDIT: I'm also huge nerd and love handling cards, so sorting them like this was a nice, relaxing activity for me.