You should see the run I made with no portals, long roads with tons of 2x2x2 houses with firepit and any finewood furniture I can cram inside.

Your mini-bases should be separated based off your Stamina bar so you can run inside, get the resting/comfort bonus right away, then run back out.

After that run I can definitely say Portals ruin the "Valheim experience". Fast travel in any game can easily break immersion, and the concept of risk and reward based off distance is far more enjoyable than going from "A to D skipping B and C". It just saves time, maybe too much time.