Going head-to-head with the competition's leading players is part of the lure, but Wells says filling a position to benefit his side has far greater importance.
Wells found career-best form playing as a roaming defender in the second half of last season and against the Power on Saturday night had 26 possessions at 85 per cent efficiency.
Crucial in bringing a number of teammates into the game, Wells said coach Dean Laidley was very keen for him to replicate that influence.
"I'd played there a couple of times before and enjoyed it and it worked out well again," he told kangaroos.com.au.
"He (Laidley) said he was thinking about playing me at half-back and just trying to use my skills and decision-making to give our forwards or midfielders some good chances."
Wells had been used in the midfield and at half-forward in the first three rounds of the season but struggled to find touch, hampered in part by a lingering hip injury.
The 24-year-old missed three matches with the injury but convinced Laidley of his fitness after getting through last week's main training session.
Another reason for his switch to defence was to minimise early stress on his hip.
"There's a lot more straight-line running," Wells said. "In the midfield you're left, right and doing everything.
"It gave us a bit of drive from the backline. I took a couple of nervous kick-ins and was lucky enough to hit my targets.
"It was good to come back in and have an impact but more importantly, we got a pretty good win against a pretty good team."
Wells added that playing in the back half forced him to be more accountable but a tag from Port Adelaide midfielder Kane Cornes at stoppages had a flow-on effect in the Roos' favour.
"He (Cornes) was coming to me so I thought I'd go to (David) Rodan and free up someone else," he said. "A lot of players do it and it's about trying to help your teammate.
"Your chance of getting it is going to be a lot less but if you go to someone else's man, he might get the ball. It's something we still need to improve on as a team."
Tired of sitting in rehabilitation and watching his teammates "try their guts out", Wells said he was hungry to return to the side and recapture some form pretty quickly.
