While this would help with Laz, I don’t think taking away the timer bonus would truly be balancing gameplay. I could possibly see an argument to reduce the time added to the dropship per Monster stage-up.
The inconsistency of added time would make things more complicated than helpful, I think, and the greater amount of dropship time could quickly lean in favor of the monster during that first fight (especially if he’s staged up by then).
Honestly, while the dropship changes did make things really hard for Laz, I think the real changes need to be made to him directly. His mantra was always to be the distant, stealthy medic who would swoop in to piss all over the monster’s progress. Granted, Laz is a glass cannon, and shouldn’t be easy to play. But as he stands right now, Laz is in a similar place as Wraith: it’s almost too difficult/ineffectual to pull off the strategy they were built for.
The biggest thing that Laz was useful for, in both Legacy and Stage 2, was baiting the monster to camp. I think, if there were changes to better punish camping monsters, Laz would be in a much happier position.