Alright, I've made some charts to highlight to people some houserule ideas. I'm attaching a copy of the excel in the post.
The charts read as follows. The first column of charts shows a comparison of average damage between CS and TS, at specific chances to hit (which is calculated based on the chance of a hit before power bonus is added in). The second column shows the difference in effective accuracy. For CS, this includes its power bonus. For TS, its how often at least 1 attack will hit.
There are three rows. The first are the powers as normal. The second one is with the houserule, CS is now +0 to attack, but you gain your dex mod (which I'm assuming is a +4) and your wisdom mod (which I'm assuming is a +3). The third row is allowing CS to keep its +2, while also giving it dex and wis to damage.
ANALYSIS:
1) I hope it is very obvious from row 1 that CS and TS are just not balanced as currently written.
2) Row 2 shows that with this houserule, the two powers do near equal damage. However, note the 2nd chart. TS is a LOT more accurate than CS, meaning CS is still a poor choice of powers.
3) Both powers now have a clear niche. CS just does more damage than TS, but TS hits more often than CS.