Or better yet, get rid of districts and use proportional representation.
Technically even under a PR system you'd probably still need to divide most states up into a few districts, but they'd be much larger ones with much less potential for gerrymandering. You don't really want to make California into one 55-member district. You'd want to break it up into ~5 districts.
Irrelevant. Even if it were deemed Constitutional (see the equal representation clause of Article V), we would need 38 states to go for it, which would mean convincing small states to give up some of their power for a higher principle. This is a very high hurdle.
anyway, Beet is correct here. we won't be able to abolish the Senate legally under the current constitution. it would take a social upheaval and/or a new constitutional convention, or the devolution of the US into multiple countries.
Debatable. "No state, without its consent, shall be deprived of its equal suffrage in the senate." If the senate is abolished, each state gets 0 senators instead of 2 senators, so they all still have equal suffrage in the Senate