When you and
Vorph
start getting comfortable with currency and want to level past 90 you need to check out sextant blocking and sextants. It's expensive and a lot to learn but its the only way to grind past 92+ and keep your sanity. Again you need A LOT of currency to use sextants, I typically pause around 88 in new leagues and stack money so I can afford to do this.
The TLDR is depending on the maps you shape and the amount of sextants you can use you can double your XP gain per map by using sextants to populate the map with extra mob packs. One of the reasons Shaped Strand and Shaped Shore was / are so popular is that you can 5-6 sextant those 2 specifically so that's 6 extra mob type packs on top of what the map already has essentially doubling its density. In the larger picture think double the mobs from sextants, 25-40%+ packsize from rolling the map properly, and then doing a zana mod like beyond or breaches. The XP and returns actually make for bearable XP at 90+ and you can easily sustain any maps if you do all 3 mods to the map (zana, roll map, sextant).