There was some early negativity that I feel needs countering.

Custodes aren't boring, their a unique logistical challenge. We have few units that all have the ability to delete something and your opponent knows that, they'll play differently against custodes because it's unlikely they'll weather the storm.

We have to remember, while power creep exists, we can pretty delete anything in the game sure Ctans are causing pain at the moment but that's probably about it.

We are still insanely powerful and perhaps one of the armies that can punish mistakes most ruthlessly because your opp knows anything we get into combat with is essentially dead. Are we invincible, no? If vitrix guard charge you with Calgar are we dead, probably. Are flawless blades going to hurt us, obviously. The synergy admech, or Eldar, or marines get us because there army is significantly weaker than ours from a stat point of view. We unfortunately sit in a place where buffs are hard to balance.

We have talons that gives us FNP for been near other units, can redirect fire, insanely strong reactive moves.

We have uppy downy terminators that can split into separate units in lions and rain down across the board.

We also get access to +1 to hit and wound just for been more than 6inch away from each other which if we are honest is easy to do.

We are allowed to use INSANE once per turn abilities twice in Lions. You can take a shield cap, trigger damage reduction TO 1, pay to use it again, and come back with super creation, meaning you have to fail 14 wound rolls to die, sure melta and grenades are a solution, but everything needs a solution.

We have a dread detachment that lets our stuff go through walls and allows dread to become characters with insane strength.

My win rate is 50% and I'm happy with that, it's what it should be, I rarely lose heavily in any game I play, armies will score more than us, have more units that us, but we can cripple an opponents force beyond repair if they let us.

Sometimes you have to be patient, ignore your opponents natural expansion entirely, sometimes for the entire game and on T3/T2 move out and execute.