I like to go for lategame in my games, so I enjoy leveling my champions a lot. The only problem with this is: there doesn't seem to be enough XP on the map to level more than 1 champion, unless you have the Wanderlust trait and keep buying new quest maps (which is a little annoying too since it requires a lot of clicks to go from buying the map to using it; there's also some quest locations that are bugged out and won't start a quest upon walking onto the tile).
In my current game I already did all the quests in my region (which is half the map), cleared the earth wildland along with Delin and fought the AI some (killed 2 or 3 AIs off myself, although they do give a lot less XP than monsters in the wild). My sovereign also has tutelage from level 1 on and knowledge since level 2 and he only made it to level 17 in 465 turn eventhough he fought pretty much all battles throughout the game.
Meanwhile the rest of my champions have to sit in a settlement with an adventurer's guild where they barely gain any XP either.
In FE I had several champions be able to reach level 15+, some even 20+, a few level 25+ playing Men (so +10% xp) and using Wanderlust, buying several quest maps each turn (although it gets boring having to click that much every turn).
In my opinion the leveling feels kinda off because your champions need to be high level now to reach the good skills, in FE you could get the good stuff early by just dodging the bad random skills available. I think Wanderlust should be more about getting additional rewards from quests than about being able to reach high level at all (by that I mean, everyone should be able to reach a high level off the XP available on the map, Wanderlust should just make it a little faster or more rewarding).
How do you guys feel about champion progression in LH?