Sicycre has the dev team considered borrowing a method used in FFXIV?
The daily roulette rewards players for touching on some of the content daily, but discourages spamming. Adding a 1st kill reward daily would allow some players to budget their ambushcade runs as they can predictably earn a good amount daily and reduce the congestion in the first and last week of the month
This can be achieved through adding a daily repeatable Records of Eminence quest.
I believe this suggestion is also among the few that doesn't a) require the team to punish solo players by imposing time & group size limits b) punish players by imposing a hallmarks cap