Small Submersible Pump For Additional Flow

Is it a good idea to put a small submersible pump in the opposite corner to my filter?

I'm thinking it would help eliminate a potential deadzone where the water doesn't move much.

My filter is designed to be on the left rear corner and I've noticed that if any loose plant matter ends up in the rear right corner there's very little flow.

So I was thinking of locating a small 200L/H submersible in the rear right corner.

I have fairly heavy planting and I'm planning homing Tiger Barbs, Pigmy Cory's, Cardinal Tetras, Celestial Pearl Danio, Bolivian Rams and Cherry Barbs.
AFAIK none of the species will mind a bit of a flow.

Are there any pros and cons that I need to consider?

You can have a strong flow or not, I don't think it makes much difference. Floating plants hate fast surface flow. A filter of the right size for the tank will circulate the water enough to keep the temperature fairly constant and to allow gas exchange at the surface for all of the water. I reckon worries about "dead spots" etc are yet more cases of "much ado about nothing" which seem to permeate fishkeeping and are often based on guesswork rather than any real evidence. I don't bother about any of them and my tanks are full of plants, all of the fish I have bought are healthy, the only ones I've lost are a few of those I inherited with second hand tanks and which were probably old and/or ill when I got them. I also do very few water changes and very rarely vacuum the substrate, some of my tanks are "overstocked" but it doesn't seem to  bother the fish. You can buy all sorts of extra equipment and additives but I doubt if most of them are necessary. Most of them probably do more for the aquarist's well-being (feeling we are doing the best for our fish) rather than the fish.