Going to use my first post in an attempt to bump this topic...
I find that in many situations, if you hit with a dash attack, you can sometimes combo into a few more dash attacks. This is useful because if you hit somebody with a dash attack in the center of the stage, you can string dash attacks together to hit them much closer to the edge, until you can do a fair chain gimp.
Also i find its sometimes better to end a fair chain with the fire part of your bair while using by turning around using your up-b.
This is useful because if your worried about whoever your fair chaining di-ing out then using their second jump in an attempt to recover, when you drop your fair chain and switch to rising bair, they have to use their second jump then and there to recover in certain situations, which will make them jump right into your rising bair.
This also helps conserve fuel, because you obviously start heading towards the stage as soon as you do your rising bair, and bair also has the potential to side ko from much earlier than fair, so you dont have to go as far out to kill them
If somebody is high in sky, above the stage, a rising nair combo is also effective, even if you arent under them. You can do a rising up-b nair, with forward momentum past them, then wavebounce to go the other direction, back towards them, for another nair. This isnt always a true combo, but often times its a psuedo combo that they cant airdodge out of.
I also find jab>grab to be an effective way to get a grab
Also in an attempt to ensure further discussion is this thread, we should probably start talking about match ups with characters, and thereby get strategies and such to beat said characters.
Edit: you may also want to edit your first post to note that full uair only does 19 as opposed to 23 in vbrawl.