Based on what is posted on the WoT News, it doesn't seem like there will be any special event mode for Halloween.
While last year's (Booger Collection) was somewhat disappointing, 2017's Leviathan Hunt was a TON of fun especially with the tanks provided. If the Booger Collection can be reworked a bit and made much more plausible to ascend the tiers for free, then I (and I'm sure some other players) would enjoy it.
Yes, Tank Races will be wrapping up as well as the Tank Festival. How long will we have to wait until another special mode comes out? Frontline doesn't count because it occurs on a regular basis.
Edited by BadCorps, Sep 25 2019 - 22:35.