First, I will admit I'm not an expert on climate agreements, I just believe scientists when they say we're doing the global warming.
As I understand the Paris Climate Agreement, each country resolved to reduce their own CO2 emissions, regardless of their current output.
It seems unfair to me that Egypt, for example, with low industrialization and poor economy is expected to reduce carbon output similar to how Germany, with highly advanced industry is going to reduce carbon output.
I am thinking that perhaps a better idea would be calculate desired CO2 emission/capita, and countries below that output could sell their "savings" to countries above it. This would still be a reason to reduce output for everyone - large emitters, because they would save money, small emitters because they could earn more - while simultaneously providing smaller economies with cash influx that could be spent for improving life quality and advancing technologies.
My understanding is that countries increase emissions in pursuit in GDP, since GDP nicely correlates with life quality (with exceptions, of course, the biggest one being USA), and life quality is what matters most to people.
How many erroneous assumptions did I make above? :D