Welcome to the community.
You should be aware trusts have higher charges than ETFs, in general.
It’s a nice and diverse portfolio, a good mix of developed and emerging markets.
If wealth preservation is part of your goal, you should include more than equities. You should think bonds, and maybe commodities (e.g. gold) that will help mitigate the impact of the next downturn on your portfolio.
Here are examples of simple portfolios.
This is a Buffet-style portfolio, a small amount of bonds, a lot of equities for (hopefully, but not guaranteed at all) aggressive growth.
The next one is a rather conservative portfolio, half bonds, half stocks. Harry Markowitz is considered by many to be the grandfather of portfolio building - he won the 1990 Nobel Memorial Prize for Economics for contributions to what is now known as Modern Portfolio Theory.
All in all, the important thing is what is your goal? The more aggressive growth you target (and the more risk you can take), the more equities you should have, like equities ETFs or individual stocks.
Individual stocks are quite risky as your money is invested in one individual company as opposed to a range of companies, which is the case with ETFs.
The long and short of it is, if capital preservation is your goal, you could consider adding some other asset classes such as bonds.
Not financial advice and please do your own research.