Leroux: I hardly ever replay games, especially not RPGs. I know for a lot of people RPGs are all about the replayability, but I get bored to death by all the repetition. Hell, I'm not even sure I will complete it the first time around, with how tedious and frustrating it can be. Anyway, I'm usually not a minmaxer and metagamer, it's just that from your and other players' comments I got the impression that you really need to be one in this game, in order to be able to beat it and not end up with screwed up character builds and unwinnable situations.
Metagaming or min/maxing is not necessary to complete this game (same is also true for most other RPGs, btw). You can even make some silly/subpar decisions in your character progression and it still should be fine, as long as you don't make too many of them.
Evil Islands is not even nearly as hard as some people like to say. You only need advanced advices and well planned builds if you want to kill everything and get maximum amount of XP and gold. Otherwise, if what you're after is simply finishing the game and learning its story/setting, then you can play normally without worrying too much.
Sarisio: Speaking about it, I can't remember - were dragons approachable by melee in Allods 1/2?
No, they were not. You could only harm them with ranged weapons (bow, crossbow) and spells.