I believe that the Federation has too much of replicators. In fact, one Federation Replicator and the Bio-Replication Net are enough. In the demo why not add a breeding of animals in each empire as the Klingons who have a breeding targ (per example)? So we would have several kinds of food generated: farms, aquatic plants, replicators, and "breeding".

Technically the Empires do already have lots of different types of buildings. The additional replicators are my own idea, but it's one that I consulted with Dafedz for. He hasn't updated his database with this info, but I wanted the game to have a better sense of of the progression of this important technology. I admit some of the bonuses need toning down though as the Federation currently have huge food bonuses. Here are their buildings as they stand though:

Federation
Free Market
Agricultural Centres
Aquasphere
Hydroponics Dome
Private Farms
Protein Resequencers
Basic Food Reprocessors
Federation Replicator
Bioreplication Net
Domestic Replicator Network

Klingons
Basic Food Processors
Aqua-Dredge
Targ Breeding Ground
Mark I Replicator
Mark II Replicator
Private Ranches
Forced Labour Farms

Romulans
Organic Regenerators
Mark I Replicator
Mark II Replicator
Aquaculture Centre
Bio-replication Net

Cardassians
State Rations
Agricultural Program
Aquafarm
Hydroponics Dome
Basic Replicator
Private Farms

Dominion
Provisions Station
Organics Replicator
Advanced Replicator
Private Farms

Some of the minor races have unique food production structures as well. So as you can see, there is a decent mix of food buildings already. Ok, it's a bit lop-sided with the Federation, but some of these replicator techs could potentially be shared or modified.

I've posted about this months ago. It's ridiculous the amount of structures the Feds have. More upgrading to do, and it's such fun the upgrade system...
The names are problematic too. Replicator, Replicators, etc.
Bad ideas IMO. More structures doesn't equal more fun or more "content". More annoying, more disk space, more processing, etc - the usual batch of excuses should be applied here too