This option sucks... Urshi should upgrade your Keystone and also let you upgrade your legendary gem... You need rank200 to unlock second ability, which means around 130 hours of gameplay (read somewhere else, a guy calculed it and I believe it xD).
The old system was really bad but the new one still needs work. Before you were incentivized to lose and now you're incentivized to quit before it gets tough. I think we'll see people delaying the rg kills on their mid lvl runs so that they can get their last jump to land a few lvls below their limit. I suppose it works out as an efficiency choice but I'd like to see an incentive to push yourself to the limit, maybe bonus upgrades the first time you beat each grift lvl.
Opinions?
I say that because you get more chances to upgrade your gem the higher up in greater rift levels you are. Seems more efficient that way.