The Grand Prix Rewards + Guardian Event Raids made progression feel very good and well paced.
The honing book materials really helped in pushing characters in Tier 3 and I’m sure more rewards like this would be really helpful.
For April and May, I do not know if there are any events but if South Vern provides good materials, please release Valtan in Mid May so that there is content to look forward to, Tier 3 feels somewhat empty on content compared to Tier 1 and Tier 2 story and horizontal content.