They’ve already made more compromises than a smaller party typically would have to since they’re trying to cater to so many people. Of course they still have to do compromises like the mentioned senate, house, presidential thing that we don’t really have, but that’s more not really a two/multi party thing.
That, by itself, is not a good thing, since that would essentially mean that there is no strong opposition. I am of opinion that strong opposition is always needed. It keeps party in power “more honest”. This is again advantage of the two party system, as I mentioned before.
It’s a strange idea that +50% seats in two party system good but bad in multi-party system. It doesn’t mean there’s no strong opposition when there’s more than one opposition party…
Also two party system is no guarantee for a strong opposition. You can easily have a situation where one clearly dominates. Strong opposition is not a guarantee or unique to two party system at all.