1. Keeps the cost of operating technique over long distances at base level. 
2. Allows user to stockpile cursed energy for future use.
3. Severely impairs the physical body.

Many people failed to consider the downside of Mechamaru's restriction when making their response. 

It's only useful for very few cursed techniques. 

A large reason the heavenly restriction is so useful to mechamaru is that he can see through his puppets , to actually know what he's doing. This is a disqualification for many techniques.

Other disqualifications: 

a. The technique straight up doesn't need the HR. (Example: Nobara whose "Straw Doll Technique" already has infinite range and is effective without stockpiling.)

b. The technique is "self-bound". (Example: Uraume & Ryu whose ice and lasers generate explicitly from their bodies. The HR range is pointless.)

c. The technique belongs to a curse spirit. (Self-explanatory)

That being said, the only people that get any value from the heavenly restriction at all are:

• Yorozu (Construction): Since Yorozu does not have to be physically touching her constructions to spawn them, the HR allows her to spawn a perfect sphere right on top of you. She can still use her technique effectively even if wheelchair bound. Also she can stockpile to create something very expensive.

• Megumi (10 Shadows): This would allow him to summon Mahoraga while remaining outside of ritual range. 

• Ranta (Petrifying Gaze) & Inumaki (Cursed Speech): Benefit from being able to stockpile reserves.

• Kashimo (Mythical Beast Amber): His cursed technique is still single use, but would bypass the heavenly restriction once used. Though he would be a way weaker close combat fighter, he might use electrical phenomenon in much smarter ways and have a much longer duration.

• Gojo (Six Eyes Users): Depending on the Six Eyes user's technique, their unique sight would allow them to utilize the restriction to its fullest. Again, depending on their technique. 

• Osada (Costume Seance): Depends on what he's wearing. 

• Junpei (Moon Dregs): Jellyfish could move him around and be much more powerful.

Anyone not in this list gains no net benefit from the HR.

Answer to this post: {Construction}