Death Timer deduction ~As Buildings are Destroyed~
So having the momentum the entire game only to get tragically aced at 35 minutes and lose your nexus through 4 towers and inhibitor feels bad right?
Possible suggestion: The destruction of a building partially detracts from its teams death timers. It could be a flat second amount, or % based. It can be diluted across every dead champion, so it's more effective reviving individuals, or ineffective reviving entire teams without many buildings lost. Or just simply the same for every character.
This allows teams that hold their towers and stay in the lead to have a better but limited buffer against a sudden and tragic reversal.
It's a bit of a hacky solution compared to tweaking the death timers or towers themselves tho and makes pushing for the win more difficult to gauge safely (if done the deductions must be simple)