The 225 has everything required but the next development from Airbus will add more in terms of positioning, IAS etc. The IAS hold works down to 30kts so with a North Sea breeze you can be at a fast walk at the latter stages and still be 4 axis. The later 225s have ground speed hold as well which is the next step in safer approaches. In 4 axis it runs on rails, no requirement for a rad alt hold, the bar alt being extremely accurate although you could use cruise height as there is no "fly-up" fear like the L2.
The 225 is the safest aircraft out there by a country mile, it's a shame it got such a bad rep after shaft-gate but guess what.....it's worth compared to other heavies is now being realised, full fuel, full payload, highest range and the best/safest automation on the market. And you get your own door!