@PrivateHell As someone who made mods in both games for years~ Same system, larger more flushed out world, just no ragdolls or item physics. Morrowind AI is also about on-par with Skyrim AI, which isn't really saying much to begin with though; except it's also before the Radiant AI was implemented, so NPCs don't generally go and eat and rest and follow a daily work schedule.
Also the graphics can be improved significantly with MGE XE and essentially becomes a whole new game on just that alone.
Although quests in Morrowind can be a bit harder as you need to listen to dialogue closer and keep track of your journal.
@PrivateHell I totally suggest trying Morrowind again with some of the new mods out like MGE, and some minor things like stamina/mana tweaks and custom start if you haven't already.