Not sure if this has been pointed out yet but i will go ahead and share my discoveries anyway.
Currently Beacon of light is:
1) Affected by LoS
Which means if your beacon is LoSing the target that your are healing, beacon will not receive any heals
2) ignoring over heal
Which means if you heal a party member who is at max hp, your beacon will not receive any heals ( no spamming heals on yourself =/)
3) bugged
If the beacon moves out of your/your heal target's LOS ,causing beacon not receiving any heals, the spell bugs out and the beacon will not receive any further incoming heals even if he moves back into your/your target's LOS until you refresh the spell (not sure if it happens everytime but it did happen to me while testing)
And oh Holy paladin Judgement damages are laughable. I'm in S3/S4 holy gears and did around 600 judgment damages (is this bugged?)
Ret and prot specs are so much fun on PTR....i guess i can finally say byebye to holadin and be a real paladin lol. =p