Well, with PE banned Mystic Forge is a lot more enticing as a go to option to replace the now missing deterministic line to draw the deck in a compact combo. Crystal Shard also lost a ton of value to the deck after that ban. It's worth giving an artifact cost reducer and the Forge a shot in place of those pieces.

Engine wasnt that important for me. i still like shard, doing stuff twice is often enough

The Shard can work wonders doing double duty protecting Urza and generating value from replaying him, so I still think it's acceptable to devote a slot to it. I just miss that it worked as a 2 card combo win condition with PE to pull triple duty. I've taken it out for the time being to test some other cards in that slot but if it turns out I really need another piece to protect Urza it's going right back in. I think with the modular theme you're running the loss of PE affects the value of Crysta Shard for the list quite a bit less than lists that run less creatures to generate value from.

Intruder Alarm ?

FenrisBurgess indeed that should be in there, Ill start looking for 1 :)