Our IT department perfected grail ICE.

Given you can tutor for IT Department via 2 tech startups, I would suggest dropping 1 IT department and adding 1 more Caprice. This would give you room for something a bit cheaper for 1 of the wall of thorns slots.

But then, IT is the main card of this deck, to the point where the spots usually occupied by Interns have become Startups in stead. It's in practice a bonus that startups can also get you a Jackson or a Sundew.

As far as testing has gone now, the games lost are happening when the time you gained by playing grail ice and sending the runner on a goose chase to catch the Sundews isn't abused to set up the IT dep server. Only 2 games were won where IT dep wasn't key (the same windows were abused by Nisei in stead, since IT dep was absent).

When the opponent has a full rig and no longer fears grail, you've got to have gained an advantage somehow, that's the main reason you'd invest your influence so heavily in grail in any deck.

Caprice doesn't really do that, it's actually a failsafe in case that plan doesn't work. If the opponent is overcoming grail, Caprice is the only way out.

You are correct that the ice is expensive, the economy insufficient, esspecially given that I suspect you don't actually want to play galahad, it's much more valuable in hand. It will need more testing.