As someone who is right now working from abroad by necessity - this idea is full of shit.

Yes, you won’t get a chance to properly enjoy your time away, you will always have time constrains (remember - you still need to work, and it’s still on top of your priority list), you will only get to enjoy the country like 2h a day (or whatever you had before as “me” time - that time didn’t change much) .

Assuming you are not going out far from your usual timezone - you will basically only enjoy it in the evenings, and if you are adventurous enough to move very far away from your original timezone - gl, because now you will have all the timezone mess upon you and possibly are working in the unusual hours.

In short: your work will suffer, you will suffer, you won’t get to enjoy your vacation and the country and on top of that - this will cost you more money than you usually pay! What a steal (literally).

Have no answer on you question about how many shared slots are enough, but mine are filled with:

• Mystic Salvage Kit
• Copper-Fed Salvage-o-Matic
• Runecrafter’s Salvage-o-Matic
• Mistlock Sanctuary Passkey
• Blue, Green, Yellow unid gear (I always keep of each in there, so all unids from all characters would go in one place)
• Season 3, 4 and Icebrood portal tomes
• Feast of Delectable Birthday Cake
• Prototype Position Rewinder
• Infinite Mist Omnipotion

I probably would like to add a waystation and at least one of the candy gobblers in there. Maybe fractal encryption keys, TP to friend and some enhancement, too.