I'm not against some tactics being available to some demigods and not others (eg, regulus being able to push towers from out of range, oak & QoT being able to shield their way past towers etc)
Regulus is NOT the only Demigod that can push towers from outside their range. All generals can purchase siege archer idols which can attack towers from outside their range. The Rook has a trebuchet on his back for this very purpose, and TB is bristling with ranged spells that can take down a tower. Even the UB can run up, spit, then run away. Every demigod in the game has an ability that enables them to attack towers from outside their range.
There is an item that gives this ability to anyone. There's a cool down, obviously, and it takes an item slot.
All the teleport items I've tried to date didn't have enough range to cross that gap. Which one are you using?