Why must it be so hard to maintain Rek'Sai's tunnels?
Super long cooldowns ever since the nerfs, they keep getting destroyed easily, and they time out a bit too much for my liking. It's pretty much impossible to keep even 5 tunnels up reliably without them getting picked off or without having them be in your base (which isn't very productive).
Too bad Rek'Sai is inflexible to balance changes. Give her even a tiny buff, and she's OP.