I like how you keep talking about a future mobile version, although it propably won't be necessary for me soon anyway... I'm very excited for this game, but there are too many, like it, I plan on playing. Despite my age of 20, I never felt the need for a PC/Laptop. Well, I'm looking foward!
I assume most phones, from this era, should be able to handle a heavy game. There are games such as Star Wars KOTOR, which run almost buttery smooth, with even more memory consumption. I know optimisations is key here, but I'm sure you will figure it out. ;)
I completely agree with you. Take your time, don't push yourself too hard, take relaxing time-outs when needed and come back, if you feel ready.
So anyway good luck for moving on from now on and I wish ya'll a great time in 2020 from Germany~
Take care!