What are the benefits if fglrx / AMD catalyst driver was working for Fedora with Wayland?

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I've been switching between the open Radeon driver and closed Catalyst driver over the course of using Fedora 19 and 20, and I can tell you that before Radeon DPM was enabled (with a bootline switch in the 3.12 kernel and by default in 3.13), there were significant performance and heat differences between the two drivers.

For my AMD A4-4300M APU with AMD Radeon HD 7420G graphics, before Radeon DPM, there was no 3D hardware acceleration, and the CPU ran 30 to 50 degrees hotter than under Catalyst.

Now with the 3.13 Linux kernel, I'm running the open Radeon driver and have CPU temperatures that are comparable to what I had under Catalyst. I also now have 3D acceleration, and performance for what I'm doing is comparable.

I'm sure things are a little better under Catalyst, but they are close enough right now with the open Radeon driver that the convenience of not needing to install Catalyst outside of the Fedora packaging system (there's no package in RPM Fusion any more) outweighs any slight improvements I might get with AMD's closed driver.

Basically, performance improvements for Radeon have been dramatic in the past few months.

However (there's always a 'However'), I was able to get suspend/resume working with Catalyst version 13.11. But with the open Radeon driver I cannot do a successful resume. This is ALMOST a deal-breaker because I really like suspend/resume.

I really do think that running AMD Catalyst outside of Fedora's normal packaging system is more trouble than it's worth, but before I implemented Radeon DPM that trouble was worth it. Now the open driver is good enough that I've been using it for a couple weeks, and it has been a pleasure apart from the suspend/resume issue.