@Invector, level scaling in Exiled Kingdom is pretty straightforward. The level of non-boss enemies can vary over a a pre-defined range. The enemies won't go below, or above their range so you can still run into over powered enemies if you press too fast. Likewise, if you grind forever, you won't have to worry about Level 99 Goblins. You might have noticed sometimes enemies are replaced with a slightly stronger version.
The level of unique enemies (i.e. bosses) isn't impacted by the scaling.
The two most cited times game scaling can cause problems occur in the early game. One's a general issue, the other is linked to specific map.
For example, a player grinding the first three dungeons might reach Level 6 to Level 10 before exploring farther away from the starting town. That can trigger enemies on the other places to start to be harder. But since the player hasn't gotten past Tier 1 equipment, the scaled up enemies might have outpaced the character's combat ability. As the character gets new equipment, etc, balance is restored. So it's not a long term problem, just something that might pop up here or there.
The Unknown Dungeon is known to be easier at Level 4 at Level 10. Your character looses all his or her equipment at the start of that dungeon. For low levels, that's not big of a deal. You'll find some Tier 1 stuff in the dungeon. But, at higher levels, the Tier 1 equipment you find noticeably suffers against now higher level enemies.
In general, it seems a player that pushes forward in the game, tends to find equipment as it's needed, and tends to preform better than a player that grinds a lot in the very early game.
Level scaling is only a tiny factor in the often experienced plateau in the mid-game. That's when a player seems strong for the early game, but not quite ready for the mid-game dungeons. That tends to be do more to quest order and player choices than game mechanics. The so-called plataue tends to only last a level or two. Just enough for a player to get a little stronger or find a quest that's doable. (Dragon Hunting at Level 10 is not always advisable.)
Each class and build is impacted slightly differently. Playing style, Difficulty Level and quest order all play a role, too.
As for your other line of questioning, it's also pretty straightforward. Enemy Scaling only occurs over a narrow range. So mid-to-high level characters tend not to be impacted at all by it. In addition, your mage, for example, gets a companion, gets lots of advanced skills, access to top tier equipment, and lots of advanced skills. Lastly, you as the player, might learn how to best use your mage. Synergy is very real. A Level 10 mage with a Level 7 Companion and a Level 7 fire elemental isn't something to laugh at but a level 20 mage with a level 16 Companion and a Level 18 Iron Golem is down right terrifying.
Mages are pretty squishy at first but grow to be quite powerful. 
I accept the challenge. Gassandra is such a lovely punching ba- I mean companion. I actually haven't had too much of an issue with money. I assume later on it gets harder... But I tend to keep it strategic with what I buy vs what's needed. 
