Yes, to autoconfigure the cryptonight fork (when i detect TurtleCoin, i switch to Cryptolight V7, for example) and in a lesser extend, to format better log messages. Otherwise, by experience reading Claymore topic for a long time (I loved Claymore GPU 9.7 back in time), 99% reported issues are about bad wallet or bad pool config.
If your coin is missing, just ask and I add it.
Now compiling 0.22 with exactly the same request : to add CrepCoin and PluraCoin. And MiningRigRentals.
Edit : done,
0.22 onlineMiningRigRentals support
CrepCoin support
PluraCoin support
Effective average hashrate when pressing R
That effective hashrate is the same that reported by your pool : fees and outdated shares deduced. Outdated shares happens (rarely) when the pool change the seed at the same time we find a share. It's also called Stale share.
Bytecoin support was requested, but it was available from day 1...

Edit : i see you quoted 0.22
before it was officially online. A broken binary has been online for a few minutes, i just re-uploaded the good one. The difference was the effective hashrate that was badly formatted, just a interface glitch. But better update, to be clean.