I quite like the looks of the Puma, though it is a bit lower to ride in compared to our Ecosports, which is one of the main reasons I bought the Ecosport. Mind you the Puma is a good alternative if your looking for a change. What colour did you go for? Do they do the roof in another colour like they do now on the Ecosport?
As for current keyless entry fobs on Ecosports and many other makes of cars, I agree they are more susceptible to piggyback signal attack by thieves (relay attack), so that they can get the continuous signal from your house to your car, and the doors will open. Plus the start button does not help as there is no physical turn key. You can counter this by putting the keyless fobs at home or even walking about outside, in a faraday cage type pouch or box to stop the signal getting out.
Examples....
Nowadays only the cheaper trim new cars come with the old unlocking/locking and start system which to me was far more secure, I have this on my Ecosport as its the base model, and the only model with a push button keyfob that only fires the signal to open or close doors when the button is pressed, and also has a physical key to turn the ignition on. This I really liked, sticking with the old system.
Anyway the Puma (and likely all new Fords with keyless entry) now comes with the latest keyless system that turns the signal off after 40 seconds, and so defeats piggyback attack. I would still put the keyfob in a Faraday pouch when not in use, but that just cautious old me LOL.
Advancement in design to reduce the need of a button press by the driver (keyless systems), somehow has translated to a far less secure car. Hence why this signal cutoff has been introduced.