Keeping this capped is probably for the best, both for players and for SE. Mostly for the same reason.
It incentivizes continued subscriptions, which keep server upkeep paid for. If I could cap day 1, I would probably sub for 1 month for 5.0, then cancel sub till the next MSQ update. Yes, selfishly speaking, that would be financially great for me. But if this was on the full scale, Everyone paying 1 month and quitting till next MSQ update would be bad.