Especially if the buff(s) were given to a Pokémon is already considered as good on it’s own and doesn’t have a counterpart that vastly overshadow it. At this point, any numerous buffs beyond a boost to one stat is better off as a new evolution - if the Pokémon is single or second staged - or a new form akin to Mega Evolution or even regional form. That way you don’t have to worry about, for example, Ledian suddenly hitting hard on the physical side… Because it just happen to have a new fan evolution with a big boost to Attack instead, so that way, the Pokémon is directly buffed without changing it’s own core identity.I rarely like fanmade buffs to individual Pokemon. I like being able to rely on the instincts I've developed as a longtime Pokemon player and it's really jarring when a opponent's Pokemon has way more bulk or power than I'm expecting because it got some absurd stat buff. I don't think I should have to study a changelog before playing your fangame/romhack! Plus, a Pokemon's obvious flaws are often part of why I like it in the first place. If it gets a Dragon or Fairy typing slapped onto it with a 50-point stat buff, a crazy ability, and a bunch of new moves that don't really fit its design or flavour, it becomes a fundamentally different Pokemon to me.
Inversively, I rarely like fanmade nerfs to individual Pokémon due to either being arbitrary, or just doesn’t do enough to prevent it from being so obnoxious or overpowered to fight against without deliberately gimping the movepools used by the NPCs. It’s fine to leave a non-legendary Pokémon a cut above the rest, as long as both the player and NPCs have access to it, but that’s when it get to the point not having that Pokémon presents a massive disadvantage in both in-game (if frequently used by lategame NPCs or when used as a raid boss) and / or PvP that it becomes a serious issue. I have yet to see a fangame that grants a sensible nerf to the most blatantly overpowered standard and Legendary-level Pokémon.
It’s even worse if fangames with Fakémons ended up doing a power creep on their own with obnoxiously overpowered newcomers instead of taking the issue seriously, or did the opposite and grant too many duds that feel unhelpful to use unless it’s an BW-styled Pokémon (though that might expose their weaknesses even more), so it goes to show that fans doesn’t always know better than the official devs.
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