Striker has a pretty good take on the Israel situation:
A full invasion of Gaza is going to be hard for Israel.
If I had to guess, Hamas seems primarily dedicated to capturing prisoners because they plan to copy the highly successful urban defense strategy that Azov Battalion used in Mariupol.
They will entrench themselves in dwellings on the street level, where they can fire on Israeli tanks and infantry from different angles — the roof and the basement.
They will have captured Israelis tied up in every building, which may deter Israel from just leveling everything in the city. If the IDF bombs the buildings and kills the Israelis anyway, then this will be highly controversial and demoralizing for their supporters.
Hezbollah is a real wild card. If the IDF is bogged down engaged in slow and difficult urban warfare in the South, this is almost certain to trigger an attack from the North. At this point, expect a direct, poorly planned and extremely unpopular (in the US) American intervention. Who knows what the hell happens next.