Love it as a start. Seem ripe for supply chains, technology, interlinked systems, more resources. Obviously needs more content, a sense of progression or goals to work towards.
The radar is pretty underwhelming since you are going to wind up blanketing everything with towers anyway, maybe if it very slowly revealed far away locations instead, to show you which direction to grow.
Very quickly you're earning more resources than you can possibly spend, so having a bunch of storage doesn't feel all that necessary either. Does get a bit tedious spamming out buildings.
I would absolutely spend a ton of time on a game in this style, with simple graphics, if the gameplay mechanics were really well fleshed out.