Far too often I have songs that go right up to the 4-minute limit, where perhaps an extra 10-20 seconds would have been very beneficial. I know that we can extend the song, but it can sometimes be a bit difficult finding just the right spot to extend from (not to mention that Suno doesn't let you preview the extension section like Udio does).

However - extending the length to 5 minutes would need to be accompanied by better control over how and when to end the song. Whether it be more strict adherence to metatags like [END] or recognizing the end of the lyrics and wrapping up appropriately instead of rambling on with random music & hallucinated lyrics for another minute or so. Ideally it would be nice to have a slider feature (similar to Udio's lyric timing) that lets you decide how long the song should extend past the last lyric.