ugly in its design, poorly-functional, buggy, boring (for now, at least), slow and not user-friendly at all.
A lot of value judgements, from your opinion.
Lets break that opinion down a smudge:

These are all the same thing, summarized in "not user-friendly at all":
ugly, poorly-functional, boring
These are all the same thing, summarized in "poorly-functional"
buggy and slow.

Do they hold any water though?
What bugs are there right now?
What could you enunciate on "slow and poorly-functional"?
Why is it not user-friendly AT ALL?