Quote Originally Posted by Reynhart View Post
What players want are the rewards. Give more rewards for fully clearing the dungeons. Problem solved.
Getting the same reward faster is more rewarding. Thus, if one wants more rewards, they go faster. The problem is one of relativity. Making the slowest-path run competitive with other content forms doesn't make the optimal run any less desirable. It just makes other reward sources less compelling by comparison.

That's not to say that branching paths can't be negligibly different in their completion times (i.e. just turn into a choice based on your tank's remaining sprint recharge time or the like, to ensure double-duration sprint or as not to waste its uptime if it's already coming off CD), but your solution is dubious at best.