We dont have pokerus on PRO but there are other ways to gain bonus EXP. You can join a guild, use membership or an XP boost.
So far we have Kanto, Johto, Hoenn and Sinnoh but as far as I know they are working on Unova and on a own region aswell.
How about trying to accept other opinions? Like I stated before I want bosses to be challenging and if I mess up / lose to a boss I want to have a punishment for it. Which in this case is one less boss out of the 20 per 7 days.
If I lost to a boss with the old system I still had a punishment.
Regarding the new system in general, I am happy with it. I rather do 20 bosses in 7 days than 40+ every 12 days. Its less stressful for me. With the upcoming change to a global cooldown it will be even better, so looking foward to that.