Psionic Powers modifiers & modifier costs

[Sunrunners_Fire]

Originally Posted by Prince Charon

* In GURPS Monster Hunters 1, p23, there's an Accessibility limitation for Precognition called 'Only While Dreaming, -70%'. Would that limitation give the same cost-reduction to Astral Travel, or is it less inconvenient for the latter, since your body is mostly helpless, either way (something that's not as often a problem with Precognition)?

I'd say "Only While Dreaming, -30%" when applied to the "Astral Travel" version of Insubstantiality.

(Preparation Required (10 minutes ~ 1 hour ~ 8 hours) (Variable), (-45%; Weakened Without, *1/2; Immediate, *3/2) -33.75%); rounded down to -30% to account for various little factors and to satisfy the assumed GURPS pentaphilia.

Originally Posted by Prince Charon

* How large an enhancement is required to remove the need for Astral Crossing rolls to get in and out of the Inner Plane? Is +10% or +5% appropriate (reverse of the 'Requires (Attribute) Roll' limitation from Powers p112), or should it be a bit worse? Is it more something to handle with a perk?

+80%. A default of -8 means the enhancement the power technique was made from is valued at +80%.

Originally Posted by Prince Charon

* In a fair number of settings that feature the Inner Astral Plane, there are many realms (or whichever term the author prefers) one can visit, and thus, some of the limitations for Jumper might be appropriate for Astral Travel. Infinite Worlds p174 offers the Limited Access limitation, with varying costs depending on how many worlds you can go to. I can't think of any reason why that couldn't be applied to Astral Travel, limiting the Traveler in the Inner Plane to one or more specific realms (plus the physical world), but are there any I haven't thought of?

You'd apply it to "Astral Crossing" (the enhancement | power stunt technique), not to "Astral Travel" (the Insubstantiality advantage). This'd reduce the default penalty by 1/10th of the Limited Access limitation's percentage value; round towards the higher default penalty.

Originally Posted by Prince Charon

* In some settings, in general, and sometimes for some types of Telepaths, but not others in the same setting, Telereceive is Always On, and rarely do telepaths seem to have any more difficulty reading at least surface thoughts that a non-deaf person has of understanding someone nearby, talking in a language the listener knows at Native level (e. g. Betazoids in Star Trek, Human telepaths in Babylon 5). While this could simply be very high skill in the telepaths depicted, it's generally implied that this is just how their telepathy works. This doesn't seem to fit either Supersensitive, nor the Uncontrollable limitation; it seems more like Always On, plus a 'No Skill Roll Required for Surface Thoughts' enhancement or perk (which doesn't cover Mind Block or Mind Shield). Does this seem workable, and if so, at what costs? Should I just note it as a Feature, and assume the costs cancel each-other out?

Reflexive, +40%.

[Prince Charon]

Originally Posted by Sunrunners_Fire

You'd apply it to "Astral Crossing" (the enhancement | power stunt technique), not to "Astral Travel" (the Insubstantiality advantage). This'd reduce the default penalty by 1/10th of the Limited Access limitation's percentage value; round towards the higher default penalty.

So, it would be worth -2.5%, at most (highest value IW gives for Limited Access is -25%), or should I set it up to -5%, for reasons of pentaphilia?