2. Limitation of funds transfer through channels, unfortunately LN will not support big/bulky transactions, you have to rely on your active channels and their capacity.
Yeah, this is an issue now, but it this will likely become less and less of a problem as more channels with higher capacity are added to the network. In my experience lnd works better the smaller the transaction is. For sending extremely small transactions it works great.
I believe there is also plans for splitting transactions and sending several small transactions through different routes at the same time.