10) When I invited the 3rd hero (Ifan) I had lvl 2, and instead of letting me spend his attribute and skill points, they were spent automatically. A bug I guess.
22) I noticed that I had 101 hp on a hero with 15 constitution while others had 87 hp and 10 constitution. 5 attribute points wasted. Lesser lvlup bonus hp, higher constitution bonus, or reworked constitution, as I said before.
22) Vitality gives percentage bonus. Of course it sucks in early game, the difference will be more feelable in the late game, level 20+. Part of the concept. Did you check if the other guy had items, that gave him flat HP? If 101 is 135% the other should only have about 74 HP, if I'm not mistaken.
The mistery solved. The points didn't spread automatically, they just dissapeared. My Ifan is not lvl4, the game and experience count say he is lvl4, but in fact he misses points and hp from lvlup.