I don't know all the ins n outs of the dispute, haven't been there for quite a while since my stint in hospital, but understand second hand that the club and landowner are still arguing, however the club have found that they are in a much better legal position than they ever imagined. Owner tried to stop them flying but that effectively backfired and I imagine the open day is part of them asserting their rights to operate as an airfield. For that reason alone the open day is worth supporting I reckon, airfields are just too precious to be allowed to die without a fight.
(Personal opinion) - I suspect that long term the whole mess may actually be good for the future of flying in the area, the club will either win a good compromise settlement and gain security of tenure or they will move to one of several other sites in the immediate area, with a bundle of compensation in their pockets. For most of their existence they have had to tip toe around the owner's ideas of what should be done there, having to restrict access, numbers of members, hangar numbers, types of aircraft etc. This has stifled development and led to a not undeserved reputation for being a closed shop and not particularly welcoming.
Tex re the LP endorsement, I did one training flight on a Drifter before it was removed from the school and loved it. That is probably about the mark I would aim for, I know there is a lot of nostalgic attachment to the older types eg Scout etc but I did a lot of (unofficial and elsewhere) flying in trikes at one stage and clearly remember that the trike outperformed the single surface minimum aircraft by a fair margin and more importantly didn't have to run for cover at the first breath of wind, meaning that we could go elsewhere for breakfast and not worry too much. 2 strokes don't hold any terrors for me, esp the more recent 503's and 582's. For the moment, access to a GA 4 seater for flyins, weekends away etc, coupled with my own Drifter or similar for the "pure hell of it" flying, would probably cover all the bases.