Sanding is difficult. The PLA is very resilient and slightly flexible and doesn't take sanding well. If you print with ABS you can use acetone vapour to melt the surface slightly and smooth it out without losing detail but to do this with PLA you need to use chloroform. (so I'm not doing that).
I'm currently preparing some 'wooden' items for painting- boats, barrels and a gallows set for my pirate game and they look fantastic, the layers are not a problem at all because of the wood grain.
As with other media it's suited to some things and not to others. The way I look at it is: I have metal miniatures with mold lines, resin miniatures with bubbles, plastic miniatures with bendy weapons and all the scenery I make has visible joins and seams and none of this matters during a game, nobody notices (and if they do they don't care) so a few 1 micron lines on a printed piece isn't going to bother me if the piece itself is good.
Also, it's just
so much fun printing them
