pro: prestige class can compensate for force powers, attack powers, etc.
skills are rediculously important in kotor2...in fact, its now known that the number of components you can pick up from disassembling items on a work bench is dependent on PROTAGONIST repair skill
the forms and items and certain feats and powers can really compensate for the lower force ability and attack/defense skills of sentinels, i believe that the coveted force integration ability is sentinel class only...
the game is fairly easy, even in the hardest setting, from what i am finding out...
cons: class feats are still not that great
lower bab and lower force powers still biggest disadvantage...
since power players are going to read this thread, if you all ask nicely i can post 3 xp pumps and 2 influence pumps i have discovered in the obsidian forums...