In my opinion, many of the minor countries have too small leadership. However that didin't bother me that much in my last (very short) game with finland. The problem already mentioned in the first post made playing impossible. Finland has too small army to defend entire russian border but still ic is far too small to even produce supplies for starting units. Can't build new units at all.
My first (real, not just a test of couple of game-months) game with Finland went pretty well.. But that was due to the stupider-than-anything AI. I dismissed all my divisions except for a couple of garrisons (if there were any garrisons... it was a long time ago) and HQs. I made 1 or 2 IC, which was a mistake, but didn't really matter. I started to build militia in huge quantities, in may-june 1939 I mobilized for war, because I knew that SU would attack at any time (I had a couple of test-games with fastest speed, and SU DoWd finland in summer, always). In early July SU declared war, so my men started to dig in. After a week or so I started to wonder why SU forces did not try to attack, so I attacked myself. Turns out that SU hadn't mobilized before war, so it was pretty much an overrun until they began to get organized, which stopped my advance (which already had killed about 120k of my men, and endless divisions of SU forces due to encirclement), I asked for peace, and SU accepted. I got a couple of provinces from it, but they were only of strategic value, since they all had zero (0) manpower and resources (it's strange that theres a whole province there, where no men will grow and theres absolutely nothing of worth, since trees can't be used as energy, export or anything.)
When Germany failed completely with its invasion of anything beyond denmark and poland (DoWd sweden and norway, for some reason did NOT advance to either of them, no matter how long I waited) I decided to quit the game and wait until 1.3.
Atleast Finland is semi-playable... I don't know about the other minors. I played Brazil in 1.1, but it was pretty crappy, since threat took so long to build up (and now will take even longer!)