Do we want to make Weyland Tier 1 or do we want to make Weyland more fun to play and more powerful?
For Tier 1 stuff, rush seems to be the only viable strategy, mixed with the fear of meat damage. Porous ice that actually do stuff like Archangel and Architect are way better than.... firewall and can do stuff for Weyland. Also cards that manipulate the deck of the corp (since this is a facet of the game that has not been explored yet). a Fast track that can bring what you need and install it face up or something like this for Rush tactics.
However, I believe that rush tactics are not very good for the game as an experience. If the corp manages to rush out behind an ice and the Runner does not have the opportunity to actually play, then no fun, no game.
Another aspect that Weyland does best is program destruction (power shutdown), Asset destruction (contract Killer, CorporateTown) etc.
If Ice and cards appear that can bounce or destroy specific kind of breakers so that it will strengthen the corps defences, or assets that can actually defend the agenda, then maybe something is there. I am not asking for another Caprice or Ash, just something to mess with the rig of the runner, make it more difficult to him to make runs unhindered. I wish Archangel was in Weyland but it isn't....
Edit: I got ninjaed by @Xenasis for the Defensive assets.