Stress testing at least proved one thing: Even the blocks are all full, majority of users will not be affected. Blocksize should only be changed when there is a REAL problem, not by fear and imagination
Human are all adaptive, when banks closed during weekends, they don't change bank, but wait for it to open on Monday, and reduce their transaction frequency
+1
when blocks were full i had instant confirmation at all time with standard fee included of course. I had no delay during all the spamming cuz i way paying appropriate fee to get into blocks before all the broke asses that couldn't afford 3 cent tx fee and were crying about it on the forum.

The possibility of tx volume dropping like a rock due to scenario a, b, c or d is almost never discussed in this forum. What you gonna do if txs drop off? Core could deal easily with a sharp drop in txs and could recover later. XT on the other hand could get into trouble if txs were to drop sharply.