Theorycrafting: This may contribute to killer combo decks which aren't very fun to interact with. Neurospike is already kind of playable in Weyland, more than anywhere else. Before Azef, a Weyland Neurospike play usually required cards with at least 2+ tokens on them to work, most often a face-up City Works Project. This board gives the runner some ability to make a read and respond. Azef boards are harder to read. If their hand includes a Neurospike and a click-compression card like Seamless Launch, Weyland can spring 4 damage from a board state which doesn't look very threatening. The only thing this requires on the board is an unchecked install, and some Weyland IDs like Gagarin and SEA make it really hard to check every time, and Argus makes it hard to end every turn with 4+ cards. Being able to spring a Urban Renewal-like effect with little warning seems not very fun to play against. (Also, you still have to keep resources ready to deal with a traditional City Works Project/Dedication Ceremony turn and hopefully keep enough money to fight off a potential HHN).
I suspect this would have been more fun to play (and play against) in Jinteki than Weyland. Most players already keep their hands full against Jinteki (for Obokata and Snare and the like) so it should be less intrusive there. Also, Jinteki doesn't have any good 3/2s, whereas Weyland is so stacked on them that the only decks that play Azef non-blank will probably be weird combo decks.