I agree, Titan should take 2 explosives, not just 1.
I agree they could get a buff, but not your kind of buff. It already "sounds" op.
Stop. You are asking right now to buff the most threatening special enemy out of all.
Fire is supposed to be their weakness, but her million eggs to spawn OP tanking and rushing broodlings which also give no fucks about being on fire since fire is a fucking JOKE to them, will be your death.
It's not about the mother itself to be strong, it's about her egg-spawn ability.
Giant is in a good spot right now. No buff needed.
Watcher is a threat if you ignore it or don't have a fire weapon. Sometimes it walks out of an explosive, easily 10 supply wasted for nothing. And sometimes you or someone else hit it with a non-fire weapon weak weapon which will cause the watcher to run away. In worst places you will waste ALOT of time and supply, since sometimes it runs around 2 hallways while spawning and regenerating the damage back up.
So I'd say it's in a good spot too.
I remember back in 2015 when the Agent was op... Rest in supplies, my friend.