Capped Tomestones are fine, it just needs to be capped seasonally and not weekly. Under the current model, if you miss a week it's 450 missed Tomestones but if you cap seasonally, you can still keep up with the overall cap.

Let's say, for example, you play week 1 and 3 but can't play during week 2 for whatever reason. On the weekly cap you only earn 900. On a season cap, you earn 450 in week 1 and then a further 900 in week 3 which averages to 450 a week.

This is a much more casual friendly system as you're not required to log in and hit that cap every week. Very handy given the current queueing situation but just handy in general for people with commitments elsewhere. You won't outpace the intended level of progression which is earning 450 Tomestones a week, you just get more flexibility on when to earn them.

Likewise, when the weekly cap becomes 900 per week later in the tier, you just increase the seasonal cap by 900 a week instead of 450.