Apart from that it is painful to read the custom phonetic spelling (especially every time I see "uh" due inconsistency), there are a few things slightly more disambigous.
Milotic can ['miloʊtik] or ['maɪloʊtic] (the latter one is from Seth). Now, we are not native English speakers so it depends on how you would pronounce Venus de Milo - the Milo part, not Venus. I am with the first one, so is my sister.
Absol sounds a bit off in the suggestion. We believe it supposed to mean "ab sol" (sol: sun), [ab'soʊl] (does NOT sound like "soul", more like "sohl").
The first syllable of Metang changes when it evolves to Metagross for no good reason. But as said, we cannot interpret "uh", it seems to be used in the place of so many things that its form cannot be grasp anymore.
Gabite: The English name is the same as the Japanese one so we don't think the accent should be on "bite" but on "ga".
Regigigas is a bit off. Probably a mispelling because the sugesstion says Regigigus.
Victini, we think the accent is on the first syllable like victory.
Pidove, accent on the first syllable.
Zebstrika, accent on the first syllable.
Conkeldurr, accent on the first syllable; that could become a running joke for the 5th gen.
Leavanny, accent on the first syllable.
Darumaka, same name as the Japanese one, accent on the first syllable.
Cofagrigus, combo breaker! Accent on the second syllable would be better. Fag!
Garbodor, accent on the first syllable.
Solosis, accent on the first syllable like "solo".
Duosion, when you accentuate two following syllables, nothing is accentuated. Best only to accentuate the first.
Reuniclus, the accent on the thrid syllable is off. Best only to accentuate the first.
Swanna, we recommend a shot "a" like in swan, not a long: ['swɒna].
Escavalier, weird emphasis indeed because it is part French. Stay close to escargot and calavier, slight emphasis on the first syllable and strong accent on the last one: [ˌɛskarvəˈlɪər].
Eelektross, accent on the second syllable like electric.
Mienfoo, accent on the second syllable like Mienshao and Kung Fu.
Cobalion, this is not how cobalt is pronounced. Try [koʊ'bɔlɪən].
Virizion, comes from viridian: [vəˈrɪzɪən].
Meloetta: Melody + etta-suffix = [mɛləˈɛtə]. For those unfamilier with etta, try to pronounce "Marietta".
The 5th gen features a lot of foreign words, so no wonder it creates a weird pronounciation.
By the way, how do you pronounce Milos?