This is a topic that pops up every couple of months.
I have the same desire to build a bigger table, either for my 26OTG or my BSK (or both)
I also just caved and bought a Performer this summer.
Maybe next summer I'll make a table.
Anyway, the Performer isn't the "end all"/"be all" perfect tool, imho. Don't get me wrong, I love it, but I'd design improvements into my table, including:
larger table size
larger grill size than 22.5
taller table top (i'm 6'4")
more utensil storage
MUCH better wheels (10" pneumatic)
a fire brick lined chimney lighter that is NOT in the grill
finishing touches: paper towel holder, matchbox holder, drink holder, 6 pack cooler, etc.
Hey, if anyone is going to build a table, keep us informed. The biggest challenge seems to be how to mount the grill's bottom bowl to the table. You need something strong enough to carry the weight of the kettle, but something that is fireproof. The handles alone are not going to be sufficient to carry the weight. I have seen a guy on here that fashioned some sort of metal ring that tucked under the rim of the bowl, and then the ring sat on the table.
My plan would be make some short replacement legs and put them in the 3 flanges on the underside of the grill. Then make a lower shelf at one end of the "table" so that the grill surface is even with the table top. Then I'd use the area under the shelf as drawer space.
My dream is to someday do this with a Ranch Kettle, which seems easier to do because the 4 legs are vertical, as opposed to the 3 flared legs on smaller kettles.