The most common way of using Tripwire (string) in a redstone circuit is to place it in a straight line between two Tripwire Hooks, and when an entity intersects the hitbox of the tripwire, both hooks emit a redstone signal.
This idea adds a new block, and a new way to use Tripwire.
The block is the Tripwire Puller, and the way to use it is to place a line of Tripwire between a Tripwire Hook, and a Tripwire Puller. When the hitox of an entity or player intersects the hitbox of any of the Tripwire, or when a redstone signal is applied to the Tripwire Puller, the Tripwire Hook produces a redstone signal.
The crafting recipe is one piece of redstone, a stick, and a wooden plank. The appearance is similar to a Tripwire Hook, but the part which would be iron-grey is instead red colored. It also animates the same way.
As with a Tripwire circuit between two Tripwire Hooks, the maximum number of Tripwire blocks is 40.
why not just pass the redstone signal directly to the other side of the tripwire though? NO SUPPORT
This new item would offer a way to pass a redstone signal across an air gap (horizontal and in a straight line only).
Reading your comment another way, passing the strength of the RS signal activating the 'puller might be an interesting ideal for a second version of 'puller – but this would require changing the behavior of the receiving tripwire hook… (This reading does suggest another new item that would have that functionality – the Tripwire Signal Receiver [ name needs work ].)
The appearance is similar to a Tripwire Hook, but the part which would be iron-grey is instead red colored.
When the hitox[sic] of an entity or player intersects the hitbox of any of the Tripwire, or when a redstone signal is applied to the Tripwire Puller, the Tripwire Hook produces a redstone signal.
Minor quibble first:........."the part which would be iron-grey is instead red colored" might make the 'pullers too visible. Suggest instead, adding a red outline as is done with a trapped chest vs regular chest.
Would intersecting the tripwire itself produce a RS signal from the 'puller? (or only from the 'hook at the other end?)
I can see uses specific to either version [and being me would prefer to have both ].
There may be an issue with costs; 40 string, two blocks, a 'hook, and a 'puller being considered cheaper than 44 RS dust.
This could also be advantageous in that a conventional RS line could parallel part of the tripwire line without cross connecting…
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WARNING: I have an extemely "grindy" playstyle; YMMV — if this doesn't seem fun to you, mine what you can from it & bin the rest.