HG/SS were remakes of Johto. Therefore they wanted to make it feel like Generation 2 or Johto as much as possible by limiting Eevolutions to those available at the time. Did it stop you from importing one from D/P/Pt? Heck no but it falls in line with their take on LGPE by limiting Eevee to the first three Eevolutions despite the fact there are five more options available.
1.Yeah but OR/AS has the ice rock in the ice cave
2.I don't usually trade pokemon via devices, unless i could hack those items into HG/SS if they are hidden in game (like Umbreon/Eevee and the legendary birds being able to flee in the data of G/S/C)
Perhaps they wanted to encourage some trading between HGSS and DPPt with these things.
Game Freak dropped the ball. The "they wanted to be faithful to the original GS games" excuse doesn't work since a good chunk of the features in HGSS weren't even in GS, so it's not like adding the moss rock and ice rock would've been impractical.
I can't justify their reasoning behind ORAS. Maybe seeing as they were adding a new typing to Generation 3 in Fairy that they felt compelled to do something? Perhaps they allowed Glaceon and Leafeon when May, in the Anime, evolved Eevee into Glaceon after going to Sinnoh for the Wallace Cup. Weak reasoning I know but when your star protagonist from the region gets one, seems plausible to allow such Eevolutions in Generation 3 remakes.1.Yeah but OR/AS has the ice rock in the ice cave
2.I don't usually trade pokemon via devices, unless i could hack those items into HG/SS if they are hidden in game (like Umbreon/Eevee and the legendary birds being able to flee in the data of G/S/C)
Perhaps they wanted to encourage some trading between HGSS and DPPt with these things. I would have rathered some way to evolve them and others like Magnezone, given all the others e.g. Tangrowth were easily obtainable.
Game Freak dropped the ball. The "they wanted to be faithful to the original GS games" excuse doesn't work since a good chunk of the features in HGSS weren't even in GS, so it's not like adding the moss rock and ice rock would've been impractical.