Welcome back.
Very in-depth analysis of your situation, interesting read.
Depending on the time you have at hand you can adjust your rental strategy on your current focus. Also consider the usefulness of cards at certain levels, as you already did, from the beginning, i.e. when does which stat increase or which ability comes into play. And do you make use of that ability at some point?
Just some random thoughts.
!PIZZA
Thanks for the welcome.
Yeah, I am still learning the Chaos Legion and Modern meta to really get a good gauge on what cards are the most often used and etc. And how important some abilities are in them.
For instance, I think magic is very strong in the lower levels (bronze to gold) and Silence is a top tier ability.
And I do like the strategy adjustment you mentioned. I was renting long term, like I just rent every cards for 16 days to go through this season. But perhaps a 5 days rental or something shorter would be more ideal if I expect to suddenly not have as much free time some days. I can un-rent, and then re-rent after I am done to save some DECs. The main factor to me would be how much time I need to do so though. It's a choice between DEC and time.