Living with the Talz
In reply to Cyril Zotmund (msg # 31):
They exist as talents, not as advantages.
Reading through, you suggest that a psi buy at least one level as a talent, and is then free to work on the abilities associated with it? That makes sense, then. So 1 level of Psycokinesis and 1 level of ESP then, and you can now start working on an ability of your choice for each. That sounds reasonable.
The side effects are often associated with the advantages for other reason. I see no reason someone with the psi talent 'Animal Friend' was vegetarian...carnivores would not like them at all!
For Minklink, Kat must also develop the psi ability or it is limited to one way communication! Simply being married is not enough to allow her to send thoughts to you without a similar ability of her own. Telesend is worth 27 points, but is transmit only, and Kat does NOT require the ability for that. Sending to her receives a +3 to skill because of the relationship, but does not reduce the cost of the advantage.
Note that Mind Reading, part of Mindlink, requires you to be able to see the target. Mindlink also reduces the maximum range possible for Telesend, which is theoretically unlimited.Cost of Mindlink also does not depend on the value of the other person to you, but I would think it rather would increase the skill in a similar way to Telesend.
Incremental increases sound reasonable. I would go with 10% increases corresponding to the cost of the ability/10, rounding up. So for Telesend, worth 27 points, 10% rounded up is 3 points. Once you have 3 points, you have only a -9 to your ability, and for every 3 points thereafter, the penalty drops by one. This will mean that the jump is from -2 to zero for the last three points, from 24 to 27, but this can represent fully mastering the ability. This principle will then be easy to adapt for any ability.