I live near Sixfields. It was built 20 years ago, and is a neat and tidy ground, suitable for a team that bounces between Divs 3 & 4. It has one double-decker stand and three single decks. The long single deck is being turned into a double decker as we speak - they want it ready for the new season and will increase capacity from 7,600 to 10,000.
The pitch is generally pretty good. I guess 2 teams playing there won't help the grass, but what I think's happening is that Cov fans are understandably angry and some try to rubbish the stadium their owners have moved them to. But that's not being at all fair - there's really nothing wrong with it. It's quite small, but so is NTFC. The Ricoh had 32,000 seats but when I watched my team play there only 11,000 were being sat in and the atmosphere was poor. Cobblers get about 5k most weeks - Cardoza is ambitious hence the 10k new capacity next year - but the team is poor and could be in the Conference by then...and that's not so easy to get out of again.
The point I would make is that the Council gave the club a 150 year lease for £1 a few years back...meaning they can keep all the pie money etc and indeed they're paying for the expansion by getting money from new hotels and houses being built on the surrounding land, which they also have the 150 year lease on. There's a whole lot more going on there than Sisu have done yet, let's put it that way. Maybe CCC could help CCFC in the way NBC helped NTFC?
The nearby Saints rugby club is much bigger. The 2 final corners are being filled in this summer, taking capacity from 15,000 to 17,000 - an impressive rugby stadium.