Former House guy here.
So the first thing to understand about the House is it's straight majority rules. Outside of a couple of procedural messaging options, the minority has no say in anything. At all. It's not like the Senate. If you can get to 218 (0r 217 depending), you can do anything you damn well please, including rewriting virtually every procedural rule. It also means Leadership holds all the keys to the good life system: good committee assignments, pressure to fund raise, tasty speaking slots on the floor, media opportunities, etc. For the minority, it's miserable: you lose every fucking day. Never win. Occasionally you get a good messaging tidbit, but that's it.
In general, the house has way less "personalities" then the senate. Most members are trying to get through their days without popping up on the DC radar. Just going about their business, and as such, mostly just vote with leadership. The leadership losing a floor vote is akin to the British defeat at Dunkirk. When I was in the minority we won a late night vote on campaign finance reform and the dem staffers were in the gallaries heckling the GOP and their staff. I once saw David Obey throw hands with some GOP member after a close vote the GOP held open for like 3 hours sweet talking the last couple of votes they need.
A Majority that can't rule with an iron fist isn't a majority at all. If the GOP reinstitutes the Hastert rule, which dictates that half the majority caucus has to support a measure to bring it to the floor, it creates huge headaches on things like raising the debt limit, where you would need most of the democrats to pass it, since the majority of republicans would oppose. A 1 to 2 seat majority raises the specter of losing floor votes on the regular and a majority in disarray. Particularily in a caucus that is at war with itself.
It also raises the specter of the Democrats being able to use discharge petition to temporarily seize control of the floor for particular legislation. You are a Don Bacon and Tom Kean away from suddenly not controlling the floor on a major piece of legislation.