Hmm. Well to me it sounds like your concern is that you want to pick up vocabulary at a faster rate but because of making a mistake or two with the kanji you are not leveling up and it is leaving you with gaps between reviews.
Even though you say you don’t think you would want to use the reordering script the fastest way to level up is to use this in my opinion - that way you can prioritise your lessons so you unlock the kanji earlier on (and therefore level up faster to unlock more vocab). As explained above you need to complete the Radical lessons to guru which then unlock your final kanji needed to level up.
Regarding completing lessons quickly please see below:
[quote]WaniKani Pathway (for people who think WK is too slow)
There is a pathway to getting a new lesson:
||1w 3d 9h
||3w 3d 8h
||7w 5d 7h
||24w 6d 6h
When you learn a new item (radical, kanji), you will be tested on it four hours later, eight hours later, one day later, two days later.
During the first three review steps, your item is marked as “apprentice”.
After the “two days later” (fourth) step review, a correct review changes the item to “guru”.
When an item is “guru”, you are considered to have learnt it well enough to receive new lessons based on that item. New kanji or vocabulary (words and phrases) based on that “guru” item then become unlocked.
If you make an error during a review, you will go back two steps, except when you are in one of the apprentice steps, where you go back one step.
After a radical (blue background) item becomes “guru”, any kanji which is derived from that radical becomes available to you as a new lesson. After a kanji (pink background) item becomes “guru”, any vocabulary (purple background) derived from that kanji will be unlocked.
After 90% of a level’s kanji items become “guru”, you go up to the next level. Many people call this “levelling up”. Any vocabulary related to the recently guru-ed kanji becomes available. A new slew of radicals and kanji (for the next level) also become available.
Every day, someone posts a new thread about this issue or they complain it is too slow and not worth using.
As the number of guru’ed items pile up, you will eventually feel very differently about the workload. For example: one guru’ed kanji can result in three new words / phrases. Each level has 30 or more kanji. If you stick with the system, you will get busy.[/quote]
Other than this, regarding your grammar comment check out these threads for ideas on what to do in your downtime. A lot of people download Anki on their phones as it doesnt require too much concentration and still has the SRS feel.
The Ultimate Additional Japanese Resources List!