Always room for improvement in every system. I've done a decent amount of traveling, comparing the US to another country is pretty much impossible as there really isn't an apples to apples comparison, maybe Europe as a whole including the Non-EU member states?
In lots of developed countries college + grad school is free... just saying.
As as fixes to the system, it's crazy how much time our elected officials spend fund raising... most absolutely hate it, there are numerous interviews and stories from junior congressmen and women who essentially say that working in congress is basically like working in a spammy call center where you fill your days calling rich folks for money. Therefore what about cracking down on money in politics, all PACs are illegal, hard cap of $200,000 on congressional campaigns, $500,000 on senate races, and $40,000,000 on presidential races. Networks have to agree to equal air time to all candidates (maybe polling top 2% or something) in or to get their FCC license.