It's fine that reprise is "OK" imo. In E3S for example, there are brief moments where uptime is impossible briefly (stepping away temporarily during Temporary Current while arena is split into halves). There are a few other times during Savage content where melees either miss part of a GCD to do mechanics or miss positional (even sometimes with TN usage). That said, mages have nearly 100% uptime except for Pantokrator mechanics, which RDM historically had issues with. I think in O11S, RDM could slidecast if you were good, otherwise our "Reprise" back then was doing an unenchanted melee combo. It's some potency loss, but then again so is Ruin II, Scathe, Enpi, etc.