I agree with you, Dubai has everything. I moved out because of the war situation cooking and I was skeptical about brining up my daughters there nothing else, I am disappointed with Malta since my lawyer is telling me something else, the only clear option I have left is spain, which is great from a lifestyle perspective and for my daughters, atleast for 6 years and then we will see maybe or I am inclining towards malaysia.
I very much understand as our both situations are quite similar.
Over the last years I paid a fortune to 'advisors', but most of them still gave wrong advice and they're not even liable for it.
Day Trading is something they dont seem to understand and most tax laws were not made for it.
Spain with Beckham Law - I didnt look deeply into it myself as some friends wanted to move there and they ran into issues with the Spanish tax office (which seems to be quite nasty).
Main issue, as I understood, was that if you're the one 'performing' the trading, you may run into tax issues.
I'd love to that Spain Beckham law would work, but to be honest I think there are a lot of potential traps.
For Malta, ask your advisor if you can get a tax ruling from the Maltese CFR.
Tax rulings are usually done by declaring the tax office what you are planning to do and then get their opinion about the potential taxation.
The problem with EU countries what I see is that eventually they will apply exit taxes on unrealized profits like Scandi countries, Germany or Austria in a way already apply.
But, the main thing, specially when raising a family, is to optimize over many variables like quality of life (real life vs expat bubble in gated community), security, education options, how you like to live there and many other factors.
I'm since nearly a decade hopping between different jurisdictions, but I think its good one day to accept to pay reasonable taxes if you like to live there.
The times of legally paying 0% sooner or later will end if you want to live in a 1st/2nd world country.
3rd world countries will give you more time, but to be honest it's personally nothing for me to live a longer time in the ones I visited...