Currently in development but soon to come to Minecraft 1.12.2 will be a mod for more pistons wohooo its been soo long. With a new upgradable flavor, the goal is to bring back the extended, magnetic and super pistons featured in the MorePistons mod by the Gollum team for 1.7.10. While their codebase was referenced there were too many changes from 1.7.10 to 1.12.2 models to do a barebones upgrade.
So written from the 1.12.2 pistons trying to remove all the bugs with entities popping off and the collision box mishaps, the upgraded pistons will bring a less buggy experience to the future development of the added piston types. The current version Upgraded Pistons v0.1 is to snapshot the pistons ripped out of 1.12.2 and bug fixed. If you would like to follow the code or help with developing the code it can be found on github and will be linked on the source tab.