One thing that is important for you to know is that Zynga rarely gives fun things for free. But even though they don't provide this feature for free, at least in this video I suggest to them to offer it at the lowest price, and hopefully they listen. 😅
No, imo the best QoL improvement in 2024 is to reduce feeder costs for troops while increasing the xp gained. Fast farming looks to halve your time; raising my mana troops to lv 29 under the new QoL cost 1/8 the ham (5m food rather than 42 million).
I bought the Timesaver VIP pack for a month, and it only took me 1 day to complete the entire Season 5. You may need 4 to 6 days to complete all the seasons.
I'm sure time discount items apply to things related to time, whether it's training heroes or upgrading buildings. However I can't check for buildings, because all mine are already max level.