Honestly, about the "likes low level play", I'm reminded of a guy I used to play D&D with, Tom. One day, he got to talking about the game he wanted to run, and it sounded really cool; there was this island with ruins and monsters, the players would have to hire a ship to get there and back, there were no services there other than what you brought with you, so there was always this risk that if you didn't snag enough treasure, you wouldn't be able to afford another expedition. Thus we had to be careful with our money.
But we started off with quite a bit for whatever reason, so I suggested we pool our resources to buy a lot of equipment, and good armor for the fighter and cleric, and Tom was like "wait, you shouldn't do that."
"Why is that?", we asked.
"Well, you need to afford training or you won't be able to level." He then showed us his training cost rules, and they didn't start off bad, but after level 5, they spiked.
So we played for a bit, and it was fun, but even though we were able to do more on later expeditions, the treasure to xp (this was a 2e game) started getting very skewed. As in, we quickly ended up with characters who had the xp to level up, but we couldn't afford it.
I brought my concerns to Tom, and this is what he said, pretty much verbatim:
"That's why I like training so much. It keeps you from being able to level up past the point where the game is fun."
In light of this revelation, us players got together at Steak & Shake one night to discuss the game. We decided to pool our gold to put the Wizard through training, as we felt he needed more hit points (and his 4th level spells would be a great thing to have).
A session or two later, we announced the Wizard was level 7, Tom cried foul, we showed him how we'd divided the wealth, and he actually sulked, saying "we didn't get how to play D&D the right way".
And then he said he had to put in more hours at work, and we never got back to that campaign.