The Patriot, in its original form, is a direct link to the LNWR Claughton 4-6-0, indeed, the first two Patriots had Claughton driving wheels but were otherwise new locomotives (but to the LNWR Accountant they would have been classed as Claughton rebuilds!). The Royal Scots and Patriots, in their original form, were very distinctive looking (in a pretty-ugly way) and I can see the historic reason for choosing the original boiler for the Unknown Warrior. Not all Patriots were rebuilt and many people therefore remember them in their original guise. Progress is coming on nicely with 45551, see:
http://www.lms-patriot.org.uk/
It needs to; the loco has an important centenary to mark in 2018.
Regarding 72010, the Class 6 "Clan", there has been much written about the apparent poor performance of these locos, but this is also countered by many crews and by work carried out on them by BR. The Clan is, of course, basically a Britannia with a smaller boiler. After some years of stop start progress, wortk on 72010 is also now progressing well. See:
http://www.72010-hengist.org/index.php
For my sins, I'm a member and supporter of 3 of the new build schemes and it comes as something of a shock to me
as a GWR aficionado that none of them is a GWR design although one, 82045, is from a Swindon built class!
They are, 45551-The Unkown Warrior, 82045 and 77021.
Progress on 82045 at the SVR has been excellent:
http://www.82045.org.uk/
and this really will be a useful loco for most heritage lines. Similarly, its Class 3 tender cousin, 77021, will also be of use to heritage lines, that 17 ton axle loading being very helpful on "lighter" lines. The 77021 Group only started in the public domain less than 2 years ago and progress is relatively slow at present. As might be expected, 77021 will share many components with 82045 and, as the only "missing" BR Standard loco in the lineup, is well worth building. BR Class 3 tender locos are not beauty contest winners though but beauty is in the eye...etc! Link to the 77021 website below:
http://www.77021.org/
At the moment then, we have:
2999 (conversion from a Hall rather than an all new build I concede)
72010
82045
32424 Beachy Head
Holden F5 2-4-2T
B17 61662 Manchester United
B17 Spirit of Sandringham
GCR 4-4-0 567 at GCR
4709
LNWR George the Fifth
6880 Betton Grange
Class G5 0-4-4T
72021
84030 conversion from a BR Class 2 tender loco
P2 Prince of Wales
P2 Cock o the North
1014 County of Glamorgan
4-4-0 Claud Hamilton
LNWR 2-2-2 Bloomer (which seems to have stopped at Tyseley)
The Galloping Gertie 2-6-0 at Swindon & Cricklade (which seems to have 2 hopes and one of them's "Bob"!)
There could well be more of course and I apologise if I've missed any. Some of these projects have made such progress in the last 2 years that, to all intents and purposes, they look just like a complete loco undergoing major overhaul! The P2 Prince of Wales has, by far, been the most spectacular but with its Tornado workforce pedigree that's not really surprising.
If all these locos are too small for you then you could invest in the USA:
http://www.prrt1steamlocomotivetrust.org/
Now this will be something!