>200 more new Pokemon.
>70 of them will be legendaries because why not?
>3 new legendaries
>6 new starters
>3 including Galrian Slowpoke/Bro/King
>118 Mons remaining:

Let's assume:
Starters from each Gen. (72)
This takes our total down to 46.
Add in the Pokemon we saw returning: ~20-30.
Estimated remaining "surprises" 16-26.

Don't let people tell you otherwise, this is going to still be a loss of your bro :)