Best possible connections from US - EU/UK will never be below 200 ping, from my experience the 6 years I spent in the US.
And so kicking with a 200-300 MS ping range will guarantee the people overseas will be kicked. This inst just with LFS , any game were you a long range connection like this - it will be a problem, regardless of ISP.
South Africa also is minimum
200 Ping just to maintain a connection to the EU or the UK.
They have only major ( reliable ) 2 lines ( only one of these confirms to be fiber all the way ), that connect RSA to the international community - of these two , one runs over land through Africa, the other sits 5KM below the ocean. And connecting to EU stupidly routes up the easy coast instead of the longer and more direct line up the west - which Telkom Assholes tend to try and monopolize for themselves. Beleieve it or not - but RSA often sometimes even has worse connection to Australia than to the EU in some scenarios and provinces.
All other cables are utter crap down here. Most ISPs "buy" access to lines which are predominantly controlled through Telkom. Almost ALL ISP services are going to end up in Telkom's hands sooner or later - and they - being known to be one of the worlds most expensive Telecommunications entities comparing what they actually offer their clients to other ISPs - and also their outright attempts to discredit or downsize other local entities - as the majority of the Telecommunication related cables in this country belong to them.
There is no true alternative, the only way to possibly escape a connection that WILL go through telkom no matter what - is 3G, and only a couple of services are able to do it without Telkom, bypassing them entirely - but then again , wireless internet thus has additional problems especially to those who live in valleys, mountainside or hillside( facing away ) - or in remote areas.
The oceanic line is a piece of shit, and Seacom break it 5 times a year. This is the line used by personal and private internet users, and WACS tend's to be getting the better and bigger clientele , thus greatly disadvantaging the general population, especially those to the west.
The "better" overland line, is "intended' for bussiness use only - for some reason. However when the seaboard retards screw up 5 times a year as usual - then the entire country is clogged on the remaining Overland International Line, while in my work I have seen this line to be reliable - the distance cannot compensate for quality in any way , regardless of the available current technology, you are still cramming every ISP in RSA on it.
So anyone setting such limits (below 300) are greatly aiding to the prevention of overseas drivers from joining and racing on such servers.
Lag only becomes unbearable above the 300MS range... so if such limit exists I would suggest raising it. In my experience lag for RSA gamers only jumps and holds 300-400MS and if they are downloading at the same time, it would be impossible for them to maintain a 200-250MS ping otherwise.
I guarantee this: When I was in the US for 6 years, I never had a connection to any EU servers lower than 200MS. Average was around 250.
And right now - I am in South Africa - were LFS, and all other "games" , never have a ping below 200MS.
If I'm in Japan, it's a bit worse.
200-250 MS is bearable, and don't cause major problems... and recent changes in LFS have actually helped to make the pain less obvious... and it can only get better...
On the note about ACE - that is far from excellent - that's the unreliable line with a bunch of repeaters that cant last more than "months" near the southern tip - and was under repair more than 3 times last year. http://www.seacom.mu
only actually reported a couple of the events and remained "no comment" for the remainder of the issues on this area.