State of tracks rising from lower Hollyford road?

My partner and I will be driving our camper (Nissan Civilian bus) to Gunn's Camp in early March and staying there for about 7 days. Depending on the weather we want to be out and about walking, exploring the local bush and scenery as much as we can. Not just in the Hollyford valley floor but up side valleys and tops where feasible. Another couple we know will also be staying at Gunn's while we are there and are likely to join us on most or possibly all these trips. Final plans will wait until we arrive - and be dependent on how many fine weather days we get and how fit we are and what we fancy doing at the time. But some tentative routes on the East involve climbing up Pass Creek track to the Routeburn at Lake Howden and down Deadmans track back to Gunn's (NOT on the same day), with a possible overnight camp at the small lake at head of Sunny Creek. Other possibilities involve walking part of the Routeburn and Greenstone tracks from the Divide to McKellar Hut then negotiate a rough route up a spur to point 1543 and return back along the Livingston range tops - with their lovely tarns - North to Key Summit. For overnight trips we will take small tents or a fly and bivvy bags. Some of our trip ideas are inspired by route descriptions and photos by Danilo Hegg (Southern Alps Photography) and regular NZ Tramper stalwarts Yarmoss, Madpom and others with extensive local knowledge, and by perusing the routeguides.co.nz website. What I would like to know is the current state of Pass Creek and Deadmans tracks. I am expecting them to be rough and steep in places, especially Deadmans which seems to be very steep mainly. But are they well marked and/or well-defined and has there been any recent maintenance by DOC or are they likely to be very overgrown and littered with tree falls and eroded with slips? Anyone with recent experience of these tracks please share! On the West we will almost certainly do an easy day trip up to Lake Marian, and possibly go a bit further up valley beyond the head of the lake, possibly an overnight camp near Lyttle Falls. Many decades ago (1981?) my partner and I walked up Moraine Creek track to a small hut below the Lake Adelaide terminal moraine rock jumble, so revisiting this side valley is a possibility. But I cannot see any sign of the old hut on modern topo maps, so I guess much has changed, and most likely the state of the track, which I remember as rough and a bit vague in places, easy and well defined in others, has changed a lot also. In fact the map shows the track (dotted line) petering out at Tent Flat whereas I seem to remember a track or clear route extending much further up valley than that. Again, anyone with recent experience of Moraine Creek track, please share! Thank you, in anticipation!