Well, it seems clear that there are significantly fewer skills in total for 4e. If you consider that each 4e skill probably encompasses 2-3 3.5e skills, and assume that because of that, there are approximately half as many skills to train in, then a 4e rogue with 6 trained skills is probably trained in about the same percentage of the total skills available as a 3.5 rogue with 10 skills.Skills: 6 trained skills MAN I always thought that 8 was not enough, I know they have been folded into together but most Rogues in 3E played with a +2 INT so 10 (+1 for human). To me that is low. But I suppose it depends on what is included in 'theivery' if it is open locks, pick pockets/sleight of hand, find and disarm trap etc it brings you on par with 3E but certainly not more.
Also, there are a lot fewer skills that require training before you can use them at all. So characters should require fewer trained skills in order to regularly participate in skill related activities.