I don't think it helps much. I used to learn French here on Duo and on another site. On Duolingo I studied to gain at least 91 points every day to keep my skill coin stacks full, and on the other site there was a goal tracking system. It was less effective. I skipped a lot of days without practising because that had no impact on my statistics. Long-term goals don't work well.

If you keep your coin stacks full every day, you'll finish the course in about 4 months. More than 4 months, if you often redo the lessons or do practice sessions, i.e. gain coins without making progress on the tree.

The is a too formal point of view I think. There are as many rhythms as learners. We can't set a universal "proper" rhythm. Some are parrots and have a good short memory, others will need longer time to retain vocabulary but this once for all...

Good idea!

i like your idea , and it give the user confidence about the site .

like idea

Good idea!

Good idea

cool

Maybe an optional lesson plan. Lets say week one do this lesson. then week two is lesson 2 and 3. Etc. etc.