Pikachu, Dratini, Evee, Snorlax, etc. practically do not spawn at all, i have caught Evee so i am not so concerned about this as i am the others. i have yet to even see the mention of most of these ever having spawned at all in the month+ that i have been playing this server. i suggest increasing the spawn percentage of each of these rare spawns. not substantially, but at least enough that they spawn without you having to be on all day every day for a year to potentially see just 1 of any of these.