That is definitely worth an upgrade.
And looking at the current number of Lightning hubs which is opened solely by bitcoin nodes (sub 4.5k).
I'm sure this number will skyrocket once Electrum release a LN compatible version.
but will it be a Lightning Node or just a client that connects to another node?
i am not sure how it will work with LN but it seems to be similar to what we are using now as an SPV wallet, when you open your Electrum you are not running a node, instead you connect to a full node.
so how is that different with LN? my guess is that you just open a channel with an LN node. you won't get all the features.