The consultant's suitcase

I am looking for a new suitcase for next year. Being a management consultant living 5 days out of 7 in a hotel will certainly be a new routine for me. And, since it will be quite a tough routine, I am doing some research to get the basics right.
But it is not that easy to find out what I'll need, consultants don't seem to blog too much (with the exception of Paul Dunay, maybe, but social media is his speciality). And, surprisingly, luggage manufacturers don't seem to have models aimed at the 4+1 management consultants, which indicates that, just maybe, this is a niche which could be filled. At least it gives food for thought for the future of this blog.
I decided that, for a 5 day stay away from home, I would need the following:

• an extra suit (jacket and pair of trousers)
• 4 or 5 shirts
• at least one t-shirt, if not more (have to figure out if I should wear undershirts)
• 3 or 4 ties
• a pair of jeans for the evenings
• an extra pair of shoes, just in case
• underwear and socks
• one pullover, possibly
• a pair of shorts for sports. If the hotel has a pool, speedos
• toiletries

I used the tip to start with half of the suit jacket, fill the case with the rest and then flap the other half of the jacket over the other clothes. This should avoid getting the jacket creased across the middle, it makes sense.

Surprisingly enough, I found out that all of the items above fit in my carry-on (inflight) trolley. I wasn't very confident it would, but suspected it. That's why I did this small experiment. It worked.

Next week I'll take this trolley with me and look for a substitute. After all, althought it is still in good condition, its looks aren't what they once were. But it has served me well since 2004: China - Brazil - Germany - Brazil - Germany - Moscow - Germany - Brazil - Germany - England - US - Canada - Germany - Belgium. Not too bad for a case that cost me around 15 dollars, if I am not mistaken.
I am also talking to some of my consulting colleagues to see what their experiences are. What has worked for you?