Like Merlin, he does so many things already that it’s difficult to consider improving him further.
While my own gameplay arguments are often perceived as giving disproportionate consideration to farming value (sorry, folks - if we spend most of our logged-in time doing it, and if we rely on it to ascend those precious Servants from the gacha, it damned well matters), we can’t overlook that he straddles the line between farm utility and everything else in masterful fashion.
Some unique points:
- Party DEF is absent from every other major support except in a limited capacity (sometimes enemy damage is so high that this doesn’t matter much, but not always)
- AoE Charge Drain, chance for Stun, DEF Down up to 50% on his NP is no laughing matter
- Naturally his existing ability to grant party and individual NP charge, something Merlin does only partially and Reines doesn’t fully match him on until about 2 years from now
Waver may not be the meta farmer of the latest update (Hi, Castoria), but he’s in an excellent place and prone to becoming ascendant again depending on how the game itself is designed going forward.