Something is only considered a problem in relation to a goal. I think this is important to stress because if it has a different goal then of course everything it does will look like a problem.

From the Bitcoin perspective a few problems with Monero are: -No fixed supply -Opaque supply -No fixed blocksize -ASIC resistance

From the Monero perspective these same things are: +Future mining security +Privacy, fungibility, and targeted mining censorship resistance +Low transaction fees, more throughput +Decentralized, accessible, and discrete mining