Their work restarts have been solved for the most part.
Every once in a while, they 'test' a rigs' ability to shift coins quickly - and if it is a Titan or another behemoth ASIC, they direct those towards the high-diff coins they mine (Litecoin, Monacoin, etc.) while pushing the smaller rigs towards the hundreds of low-diff coins they mine against multiple exchanges. All the coins go into a trade hopper, and the results are spread around to the miners regardless of what coins their rigs are mining. The smaller rigs are helped by the heavy lifters and vice-versa.
One of the best things about the pool is that it's a straight up PPS (5%) meaning if you mine there for two hours, you get coins, period. I use a rotation of Nicehash > .25, Prohashing, and finally CoinOTron as a tertiary - all PPS so I don't have shares sitting around out there waiting for coins someday. It's really working the treat right now.
For those of you that know me, you're probably wondering where my rental tier went in my mining. I've stopped renting my rigs at Betarigs because of FinalHash's involvement with GAW, MRR is just plain problematic - I ended up giving away rental money back to renters who can't figure out how to use a static diff to save their lives, and the site seems intent to coddle noob miners by giving them back their coins when they complain for no good reason... so... no more rig rentals for me. Don't get me started on Mintsy; though I will say this, I investigated Mintsy the week they opened, and I opened a ticket to have them address allowing static diff rental stratum (my rigs puke against their slow reacting vardiff) and it's been 60 days with no action on the request or ticket. F them.
Frankly, Chris and Steve have done a buttload of work on their systems, and they are the most consistently profitable pool in existence now. Strange that there are only 60-70 miners there at any one time - but frankly, moar for me (and @cryptichermit and @CjMapope).