Do you mind to share which lawyer advised you through PM ? In fact, other friends confirmed me the 2% discounted tax regime was abolished
About the 4% holding regime, almost no juridiction worldwide fit in,
Romania at 5% but only matching specific conditions, Barbados at 5.5% but requiring economic substance, Uzbekistan, Turkmenistan, Montenegro, Hungary, not financially interesting (7.5%-9%) to be noticeable.
Andorra is nice overall (there since 10 years)
About local banks, they disregard the SEPA norm fee wise outbound, so it's not economical to get money out of the country. No SEPA Instant. Their risk appetite can be picky. I.e.
crypto handling is manageable to some extent but tricky but I was also invited to leave 3 out of the 5 banks for just transfering money to Forex brokers abroad years ago, which were deemed as "bridge accounts", making me a criminal, ah. Instead, as a fix for this blockage, I was proposed to trade through their desk via phone, no terminal, at outrageous 10 fold fees hahaha.
Even commercial traders can be bothered because half the banks target private banking and now with merger & acquisitions, there will soon be left only 3 institutions to serve the country. All in all, you're better off to bank abroad (even in nearby Spain), which is doable but with limited choice since being outside of the EEA zone often closes doors.
There is no legal fundamental right to be granted owbership of at least one local
bank account, unlike in France. It remains a privilege. It's your duty to maintain at least one since it's going to be mandatory to function here (for instance, tax refunds cannot happen on foreign accounts, but not only). So watch out, because if they ever decide to kick you out following a mistep judged in their eyes, there is no turning back. If your activities are commonly typical though, there should be no problem if you select the right horse to partner with.