Try to answer my questions honestly; you don't need to convince me to buy HoI2 because I already decided to. 
First question: How often (if ever) do you crash in HoI2? You don't need to make any comparisons on what effect this has on gameplay (I know from EU2 myself). I just need a rough number estimate of crashes per hours on an average. I know this varies a lot depending on what people you play with etc. (or rather the stability of their computers), however if you can average it I'll be satisfied.
Second question: How much fun is MP compared to SP? Obviously, in MP you'll have much more intelligent enemies than in SP, however I'm concerned about game balance bits considering rare materials etc. Another not so important thought I have whether do anyone play cooperative countries in large MP? The trouble I have here is that there may simply not be enough players to take on a decent set of countries in a regular campaign, and much less allow for cooperative play when other countries are needed. For example, if you don't have an Italy player, you're not going to put two players in Germany.
First question: How often (if ever) do you crash in HoI2? You don't need to make any comparisons on what effect this has on gameplay (I know from EU2 myself). I just need a rough number estimate of crashes per hours on an average. I know this varies a lot depending on what people you play with etc. (or rather the stability of their computers), however if you can average it I'll be satisfied.
Second question: How much fun is MP compared to SP? Obviously, in MP you'll have much more intelligent enemies than in SP, however I'm concerned about game balance bits considering rare materials etc. Another not so important thought I have whether do anyone play cooperative countries in large MP? The trouble I have here is that there may simply not be enough players to take on a decent set of countries in a regular campaign, and much less allow for cooperative play when other countries are needed. For example, if you don't have an Italy player, you're not going to put two players in Germany.