If you remember Morrowind, progress in a guild was very gradual and related to your abilities. It was paced fairly well, and you weren't sent off on what would be suicidal missions. Now, in Skyrim, they're not quite suicidal missions, but that's obviously only because of level scaling. In Morrowind, you were given quests/duties according to your rank which reflected your abilities to some degree. This was almost like a form of level scaling in it's goal, except it was a more subtle, and IMO better, way of not overwhelming the player with insurmountable tasks. The NPCs seemingly had some knowledge about your character, the ones in Skyrim really don't.
This isn't entirely specific to guilds either, NPCs in general seem to want you to do something incredibly stupid to retrieve some item or whatever for them way too often. It's just most noticeable when it comes to factions. Even in the main quest though, you're given a quest that, I assume most of you know what I'm talking about, shouldn't have been given to the PC so early in the game. Again, of course, the enemy is leveled so no worries, the PC can take it! But it kind of kills the immersion when there's no visible hierarchy to quest difficulty and NPCs will send you wherever to kill whatever regardless of your level.
I feel like the game has me start out essentially as a recognizable badass to everyone, before I've done anything to earn such a reputation, and it feels wrong.