An eighth of the levels using a single mechanic is more than average. For comparison, CC1 has one level that requires partial posting, another where using it seems intended for an alternate solution, one where it can be used just for blocks, two where teleports are blocked by pop-up walls, and three more where it's theoretically possible but not useful. Then again maybe modern levels use more teleports on average, as CC1 just has about 28 such levels.
As for solutions I'd like to see, I second James', Rock's and Lessinath's suggestions and add the following:
Dual (#35, Markus_CCLP1)
Outwit (#88, ajmiam-pit-of-100-tiles)
Yet Another Pickle (#42, Rock-Beta)
Fireball Adventure (#36, TS0)
Fireball Escapade (#141, ArchieP1)
Firing Line (#40, geodave3, lynx)
too many keys (#36, pi)
different game (#10, computer)
Delivery Boy (#101, KeyboardWielder)
Dreadmist Forest (#14, The_dark_citadel)
Particularly the last one(s) should be interesting. When I have the time, I might contribute a route or two as well on some other levels.
As for solutions I'd like to see, I second James', Rock's and Lessinath's suggestions and add the following:
Dual (#35, Markus_CCLP1)
Outwit (#88, ajmiam-pit-of-100-tiles)
Yet Another Pickle (#42, Rock-Beta)
Fireball Adventure (#36, TS0)
Fireball Escapade (#141, ArchieP1)
Firing Line (#40, geodave3, lynx)
too many keys (#36, pi)
different game (#10, computer)
Delivery Boy (#101, KeyboardWielder)
Dreadmist Forest (#14, The_dark_citadel)
Particularly the last one(s) should be interesting. When I have the time, I might contribute a route or two as well on some other levels.