よさそうだ

seems better

→ よい
phrase Rare #36,522
seems better Often used after 〜たほうが to say that it seems better or advisable to do something. よいですか in question 3 is a related form meaning “is it okay?” or “is it good?”
JA: 今日は早く寝たほうがよさそうだ。
EN: It seems better to go to bed early today.

すぐに出かけるほうがよさそうだ

We’d better leave right away.

睡眠をとったほうがよさそうだ

You should probably get some sleep.

私たちは待った方がよさそうだ

It looks like we should wait.