Pheno exclusive mons are the vain of every player trying to complete their ot pokedexs. So I suggest,
1)We actually make unovas tvs functional and announce phenos just like swarms or maybe some npc could tell you .
2)Make pheno exclusive mons "very rare" in grass or whoever they spawn .
3) more phenos happen at the same time , I'm not sure why their limited to only 1 or 2 at a time and only stick around for 10mins . But it sucks . I mean sometimes they do spawn a non unova Mon but it's not justifiable imo.
In all honesty , I would love if all of these where implemented. I mean they don't sound very hard to implement... I'm not dev so idk honestly. I'm just kind of annoyed trying to complete my own pokedex .