I wish it had been scheduled every 2 years and alternating the host nation, like it was pre-1995 (e.g. play in England in 2025, Australia in 2027, England in 2029, Australia in 2031 etc.). This would mean the Baskerville Shield - England vs. New Zealand - would be in four year intervals (at least the series held in the UK), commencing in 2028.
Having Ashes series back-to-back in 2028 and 2029 is going to be a very risky proposition, especially if Australia wins the home 2028 Ashes tests by blow-out scorelines. If that happens, it will be incredibly difficult to convince the RFL to host the 2029 Ashes tests at the larger soccer venues such as Wembley, Old Trafford, Everton Stadium, Elland Road, St James' Park etc. I can see the RFL would be more likely to take the ultra-conservative option like they did in 2001 and 2003 (albeit, circumstances around test match footy were very different back in the early 2000s compared to now), playing them at the typical Super League venues reknown for guaranteeing a 20-25k test match attendance (based on past stats), such as Wigan, Huddersfield, Hull etc. As long as Headingley doesn't host another Ashes test. Sorry to the folk in Leeds, but the 3rd test at the 19,500 capacity venue looked and sounded very amateur on tv (like it was played at a suburban park ground), compared to the atmosphere at Everton Stadium.