Hi i think that all of this should be seen with an open mind, since we don't really know for sure. My opinion about your question, if our decease loved ones could "welcome" us to the after life.

Well i think that this is very possible, i think our reality is in a frequency, witch our physicality is, but we are multy dimensional beings, so after life our "soul" can keep its essence, since when you die you are in away getting into the other dimension you may start seeing people who is already there, even more if you proyect you feelings of them being there as an important thing, since in a higher dimension thoughts may become real instantaneously, (here also but it takes longer)

so a long stoy short, yes i do think we can, even i think that you can talk to them trough deep meditation or astral proyection at any time during your life.

that is only my point of view, i would like to hear your