I think that you should be allowed unlimited tram journeys within the
seventy minutes and not just two as it would solve the problem of trams
going out of service at a stroke.

Or how about just saying that if you touch in for a bus or tram
journey within 60 minutes (or whatever) of touching in for another bus
journey, the next one is free and the clock restarts. A discount on
the first bus journey if you touched out of a Tube journey a specified
time (15 minutes?) beforehand would also be good.

My comment addressed what seemed to me to be an unnecessary flaw in the
current arrangement that can unnecessarily penalise or inconvenience those
needing to change trams on their journey. It seems that it ought to be
possible to tweak things with negligible effect on revenue.

It seems to me the present arrangement on the trams is really just so they
can implement the combined feeder bus and tram journeys, and the combined
tram journeys is just a bonus.

I totally agree with your suggestion. It seems to me that it would benefit
more people, it would be more robust, and it actually sounds like it should
be easier to implement than what they do now on the trams and feeder buses.

We should not penalise people because of slow services or because thye
have to change a lot. We also shouldn't penalise people for
multimodal journeys, as such things are an integral part of an
integrated public transport network.

Absolutely, and also when services have to be terminated short for whatever
reason the passengers really shouldn't have to worry about whether they are
getting double charged or not. The system should consider such things as
normal events, not exceptional circumstances.