My recommendation would be porting the map to TF2 or CS2 instead (if even possible). It would get much more appreciation there. The last source community that actively played the map (few times a month) died in 2022. Even if you release a v3, it's unlikely that Nide would play it more than 2-3 times a year. This coming from a person who already tried to promote the map on the server once.
The gameplay is great as is, but yeah, you should collapse the map into 6 stages. A lot of folks don't like the map because it's 2:30-3h long. Also, keep the ZM stage. That one is a nice touch to the map. Maybe just enable the ZM items or block some of the cheesy defense spots to improve the ZM experience.
As far as bugs that I am aware of:
The map sometime crashes on source (haven't seen that on GO) when too many items are used simultaneously
The 4th stage sometime bugs where a player with Hat/Owl takes the broom/egg item, it automatically activates the trigger to kill all humans despite carrier being alive. I've seen that on GO, I don't remember if it happened in Source
There are spots where Avada can nuke all zombies, if activated at the right time before the TP
On stage 6/12, the Harry key-combo sometimes doesn't show up, when actively shooting the boss. Something to do with hit-box plugins. I don't remember if this was happening on specific servers only though
Cheers
